CN104453841A - Drilling energy-saving acceleration navigation optimizing method - Google Patents

Drilling energy-saving acceleration navigation optimizing method Download PDF

Info

Publication number
CN104453841A
CN104453841A CN201410571532.0A CN201410571532A CN104453841A CN 104453841 A CN104453841 A CN 104453841A CN 201410571532 A CN201410571532 A CN 201410571532A CN 104453841 A CN104453841 A CN 104453841A
Authority
CN
China
Prior art keywords
drill
speed
pressure
drilling
penetration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201410571532.0A
Other languages
Chinese (zh)
Other versions
CN104453841B (en
Inventor
崔猛
葛云华
张晋文
陈志学
纪国栋
郭卫红
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Engineering Technology R&D Co Ltd
Original Assignee
China National Petroleum Corp
CNPC Drilling Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China National Petroleum Corp, CNPC Drilling Research Institute Co Ltd filed Critical China National Petroleum Corp
Priority to CN201410571532.0A priority Critical patent/CN104453841B/en
Publication of CN104453841A publication Critical patent/CN104453841A/en
Application granted granted Critical
Publication of CN104453841B publication Critical patent/CN104453841B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B45/00—Measuring the drilling time or rate of penetration

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

The invention provides a drilling energy-saving acceleration navigation optimizing method. By means of the method, the data, collected in the drilling process, including the mechanical drilling speed, the drilling pressure and the drill bit rotating speed are processed in real time, and the function relation between the mechanical drilling speed and the drilling pressure and the function relation between the mechanical drilling speed and the drill bit rotating speed are obtained; meanwhile the constraints of drilling machine top drive rated torque on drilling parameter adjustment, the influences of the borehole cleaning capacity on the mechanical drilling speed and the influences of the maximum torque capable of being borne by a drill stem on the drilling pressure are taken into consideration, and then the function relation between the torque and the drill bit rotating speed and a safety window between the drilling pressure and the drill bit rotating speed are obtained; the drill bit energy utilization rate is taken into consideration, and finally the optimal combination of the drilling pressure and the drill bit rotating speed is obtained. By means of the method, the effect of increasing the mechanical rotating speed can be achieved while the energy consumption is lowered.

Description

Drilling well energy-conservation speed-raising navigation optimization method
Technical field
The present invention relates to drilling optimization technology, particularly a kind of drilling well energy-conservation speed-raising navigation optimization method.
Background technology
Speed-raising is the eternal theme of drilling engineering, stride forward to darker more complicated oil-gas reservoir and unconventional reservoir along with petroleum resources demand increases Target For Drilling in addition day by day, drilling speed difficulty increases day by day, main cause is drill-well operation, the polytropy of drilling strata and the unknown of drilling well real-time condition, makes drilling process be subject to experience influence and the erroneous judgement of operating personnel.Domestic Oil And Gas Fields is faced with the double challenge of technology and cost in the overall speed-raising of drilling well, uses simple, the economic reliable and drilling speed new model that applicability is strong in the urgent need to a kind of.
Optimum drilling technique is the mark of modern science drilling well, is one of important means of drilling speed.Present Domestic drilling optimization is mainly to set up the mathematic(al) mode of quantitative reaction drilling well rule, utilize drilled well database data, Applied Computer Techniques carries out adding up, analyze, Evaluation and calculation, determine to improve drilling efficiency parameters combination with the largest potentiality, for wellbore construction provides optimized design, form final Drilling optimization process, then use it for site operation.These drilling optimizations optimize with (before brill) between empirical well and engineering is optimized for master, the former is drilled well aggregation of data statistics and analytic approach mainly, or utilizing computer technology to carry out analogue simulation or reproduction to drilling process, comparative simulation bores the further Drilling optimization scheme of result with real; The latter mainly considers from whole engineering angle, according to analysis after detailed brill, researches and develops new technology and new product targetedly, to improving drilling technology level.But, drilling process is by the restriction of a lot of uncontrollable factor, in real drill-through journey, run into unpredictable down-hole accident complicated or affect the uncertain factor of drilling speed time, these optimization methods in real time quickly for operating personnel provide strategy and solution scheme, cannot cause that rate of penetration in drilling process is slack-off, energy dissipation causes bit wear serious simultaneously.
Drilling optimization method in sum, how real-time optimization drilling process, uncontrollable factor is considered in drilling optimization method on the impact of drilling parameter in real time, end reaction to operating personnel to provide solution, thus raising bit speed, reach energy-conservation effect, be the problem that the present invention will inquire into.
Summary of the invention
The invention provides a kind of drilling well energy-conservation speed-raising navigation optimization method, cannot in real time quickly for operating personnel provide solution to solve prior art, thus the problem causing that rate of penetration in drilling process is slack-off, cause bit wear serious while energy dissipation.
The embodiment of the present invention provides a kind of drilling well energy-conservation speed-raising navigation optimization method, and wherein, this optimization method comprises:
The rate of penetration gathered in step a pair drilling process, the pressure of the drill, drill speed data process in real time, by cutting depth, obtain the functional relation between rate of penetration and the pressure of the drill, drill speed, the pass between cutting depth and rate of penetration, drill speed is:
S * = 5 × ROP 3 × RPM ,
Wherein: S *for cutting depth, unit is millimeter (mm), ROP rate of penetration, and unit is rice (m/hr) per hour; RPM is drill speed, and unit is rpm (rev/min);
Utilize least square method, the pass obtained between cutting depth and the pressure of the drill is:
Wherein: f (x i) be the real-time cutting degree of depth, unit is mm; F (x) is real-time cutting depth variable, and unit is mm; x ifor real-time the pressure of the drill, unit is thousand Ns (KN); X is the pressure of the drill independent variable, and unit is KN; ω ifor constant; S *x () is cutting depth and the pressure of the drill functional relation; it is one group of difference basic function; for difference basis function values corresponding under real-time the pressure of the drill; c jfor the coefficient utilizing least square method to want identification; N is 1; M is counting sampling point value;
prediction equation be:
Wherein: first difference basic function; second difference basic function; α 1for coefficient;
Step 2 utilizes least square method, processes in real time the pressure of the drill gathered in drilling process, torque data, obtains the pressure of the drill and torque function and closes and be:
Wherein: f (x i) be real-time the pressure of the drill, unit is KN; F (x) is real-time the pressure of the drill variable, and unit is KN; x jfor real-time moment of torsion, unit is thousand Ns of rice (KNm); X is moment of torsion independent variable, and unit is KNm; ω ifor constant; S *x () is the pressure of the drill and torque function relation; it is one group of difference basic function; for difference basis function values corresponding under real-time the pressure of the drill; c jfor the coefficient utilizing least square method to want identification; N is 1; M is counting sampling point value;
prediction equation be:
Wherein: first difference basic function; second difference basic function; α 1for coefficient;
Step 3 is in drilling process, and drilling parameter adjustment, by the restriction of drill top-drive nominal torque, within the scope of drill top-drive nominal torque, utilizes lagrange-interpolation, thus draws the functional relation of moment of torsion and drill speed:
P 3 ( x ) = Σ i = 0 3 ( Π j = 0 j ≠ i 3 x - x 1 x i - x j ) y i ,
Wherein: x i, x jfor drill speed difference point; X is drill speed independent variable; y ifor moment of torsion interpolation point, unit is KNm; P 3x () is moment of torsion and drill speed functional relation;
Moment of torsion and drill speed functional relation in the pressure of the drill and torque function relation and step 3 in step 4 integration step two, can obtain the pressure of the drill under the restriction of drill top-drive nominal torque and the first security window of drill speed, the pressure of the drill and drill speed functional relation are expressed as follows:
WOB＝aRPM 3+bRPM 2+cRPM+d，
Wherein: WOB is the pressure of the drill, unit is KN; RPM is drill speed, and unit is rev/min; A, b, c, d are coefficient;
Step 5 utilize drilling rod can bear peak torque is subject to well cleaning capacity impact on the impact of the pressure of the drill and rate of penetration, integrating step four, obtains the pressure of the drill of drill-well operation and the second security window of drill speed;
Wherein, the pass of well cleaning capacity and rate of penetration is:
v s = 0.0707 d s ( ρ s - ρ d ) 2 / 3 ρ d 1 / 3 μ e 1 / 3 , Q a = π 40 ( d h 2 - d p 2 ) v a
( 1 ) - - - k s = 1 - v s v a
( 2 ) - - - c a = ROP 3600 ( v a - v s ) ( 1 - d s 2 d h 2 ) < 0.5
Wherein: v sfor the gliding speed of landwaste in drilling fluid, unit is metre per second (m/s) (m/s); d sfor landwaste diameter, unit is centimetre (cm); ρ s, ρ dbe respectively landwaste and drilling fluid density, unit is gram every cubic centimetre of (g/cm 3); μ efor drilling fluid effective viscosity, unit is pascal second (Pas); Q afor current slush pump discharge capacity, unit is for rising (L/s) per second; d h, d pfor hole diameter and drill string external diameter, unit is cm; v afor drilling fluid is in the average upward velocity of annular space, unit is metre per second (m/s) (m/s); k sfor landwaste lifting efficiency; c afor solid concentration in annular space, dimensionless; ROP is rate of penetration, and unit is m/s;
Step 6 utilizes the functional relation between rate of penetration and the pressure of the drill in step one, drill speed, obtains the rate of penetration isohypse in the pressure of the drill and drill speed plane and obtains target rate of penetration in conjunction with Current mechanical drilling speed;
Step 7 considers the capacity usage ratio of drill bit, the capacity usage ratio of drill bit is reflected in the pressure of the drill and drill speed plane, obtain mechanical ratio energy isohypse, target rate of penetration in integrating step six, obtain drill bit efficiency optimization isohypse, drill bit efficiency optimization isohypse comprises mechanical ratio energy isohypse and target rate of penetration;
Wherein, mechanical ratio can be with the functional relation of drill speed, rate of penetration, the pressure of the drill:
MSE = p &times; ( 4 &times; WOB &pi;d B 2 + 480 &times; RPM &times; ( c 0 WOB + c 1 ) d B 2 &times; ROP )
Wherein: MSE is mechanical ratio energy, unit is megapascal (MPa) (MPa); WOB is the pressure of the drill, and unit is newton (N); RPM is drill speed, and unit is rev/min; ROP is rate of penetration, and unit is m/hr; P is capacity usage ratio; d bfor bit diameter, unit is mm; c 0, c 1for coefficient;
Step 8 is subject to the restriction of the second security window of the pressure of the drill and drill speed by the drill bit efficiency optimization isohypse of gained in step 7, in the second security window of the pressure of the drill and drill speed, the pressure of the drill that drill bit efficiency value is the highest and drill speed parameters combination are recommends to combine.
Drilling well as above energy-conservation speed-raising navigation optimization method, wherein, the peak torque that in step 5, drilling rod bears is determined by the drilling rod selected, drilling rod can bear the affect calculation procedure of peak torque on the pressure of the drill: the pressure of the drill obtained according to step 2 and the functional relation of moment of torsion, drilling rod be can bear peak torque to substitute in the functional relation of the pressure of the drill and moment of torsion, obtain corresponding the pressure of the drill.
Drilling well as above energy-conservation speed-raising navigation optimization method, wherein, the calculation procedure that affects that rate of penetration is subject to well cleaning capacity comprises: obtain the limit mechanical drilling speed under current slush pump discharge capacity according to the relation of well cleaning capacity and rate of penetration; Functional relation between the rate of penetration obtained according to step one and the pressure of the drill, drill speed, obtains the pressure of the drill under the impact of well cleaning capacity and drill speed relation.
Drilling well as above energy-conservation speed-raising navigation optimization method, wherein, the step of the limit mechanical drilling speed obtained under current slush pump discharge capacity according to the relation of well cleaning capacity and rate of penetration is:
Utilize formula calculate the average upward velocity v of drilling fluid at annular space a;
Utilize formula calculate the gliding speed v of landwaste in drilling fluid s;
Work as formula when being more than or equal to 0.5, shaft bottom landwaste can be removed in time, according to formula under calculating current slush pump discharge capacity, namely under current borehole cleaning capacity, the limit mechanical drilling speed that can reach;
Work as formula when being less than 0.5, slush pump discharge capacity is in unreasonable state, needs to adjust slush pump discharge capacity, to remove drilling cuttings in time.
Drilling well as above energy-conservation speed-raising navigation optimization method, wherein, step 6 is according to Current mechanical drilling speed, according to regulating step size settings target rate of penetration,
When drilled strata is hard formation, when rate of penetration excursion is 1m/h-9m/h, the adjustment step-length of target rate of penetration is 1m/h;
When drilled strata is soft formation, rate of penetration reaches more than 20m/h, then the adjustment step-length of target rate of penetration can be decided to be 10m/h.
Drilling well as above energy-conservation speed-raising navigation optimization method, wherein, when drilled strata is extremely hard formation, when rate of penetration excursion is 1-9m/h, the adjustment step-length of rate of penetration is 0.5m/h.
Drilling well as above energy-conservation speed-raising navigation optimization method, wherein, the drill bit capacity usage ratio in step 7 chooses 0.35.
Drilling well provided by the invention energy-conservation speed-raising navigation optimization method, consider that drilling parameter adjustment is subject to the impact of well cleaning capacity by the restriction of drill top-drive nominal torque, rate of penetration, drilling rod can bear peak torque to the energy loss in the impact of the pressure of the drill and rock break-off process, obtain the functional relation between rate of penetration and the pressure of the drill, drill speed, the security window of the functional relation of moment of torsion and drill speed, the pressure of the drill and rotating speed, rate of penetration isohypse in drill speed plane and drill bit efficiency optimization isohypse, finally provide the optimum organization of the pressure of the drill and drill speed.While the present invention can reduce energy consumption, reach the effect improving rate of penetration.
Accompanying drawing explanation
Fig. 1 is the structure chart of the drilling well of the embodiment of the present invention energy-conservation speed-raising navigation optimization method.
Reference numeral illustrates:
S1-S8: step
Detailed description of the invention
For making object of the present invention, technical scheme and the technique effect that obtains clearly, below especially exemplified by embodiment so that the present invention is described in further detail.Do not represent the sequencing of optimization method about the associated description of S1 to S8 in embodiment.The equivalents that any those skilled in the art do in right all belongs to protection category of the present invention.
A kind of drilling well provided by the invention energy-conservation speed-raising navigation optimization method a kind ofly uses simple, the economic reliable and drilling speed new model that applicability is strong, to reduce energy consumption, to provide maximization rate of penetration for optimization aim, in drilling process, use distinctive navigation optimization method real-time instruction operating personnel according to the parameter such as parameter adjustment the pressure of the drill, rotating speed of recommending, make drill bit be in efficient rock-breaking duty.Meanwhile, assist operators judges underground working and bit wear state, and Real-time Decision pulls out of hole and still continues to creep into reaching raising efficiency of breaking rock, extends bit life.
Refer to shown in accompanying drawing 1, accompanying drawing 1 is the structure chart of the drilling well of the embodiment of the present invention energy-conservation speed-raising navigation optimization method, and this optimization method comprises:
S1: the rate of penetration gathered in drilling process, the pressure of the drill, drill speed data are processed in real time, by cutting depth, obtain the functional relation between rate of penetration and the pressure of the drill, drill speed, the pass between cutting depth and rate of penetration, drill speed is:
S * = 5 &times; ROP 3 &times; RPM ,
Wherein: S *for cutting depth, unit is mm, ROP rate of penetration, and unit is m/hr; RPM is drill speed, and unit is rev/min.
Utilize least square method, the pass obtained between cutting depth and the pressure of the drill is:
Wherein: f (x i) be the real-time cutting degree of depth, unit is mm; F (x) is real-time cutting depth variable, and unit is mm; x ifor real-time the pressure of the drill, unit is KN; X is the pressure of the drill independent variable, and unit is KN; ω ifor constant; S *x () is cutting depth and the pressure of the drill functional relation; it is one group of difference basic function; for difference basis function values corresponding under real-time the pressure of the drill; c jfor the coefficient utilizing least square method to want identification; N is 1; M is counting sampling point value.
prediction equation be:
Wherein: first difference basic function; second difference basic function; α 1for coefficient.
In a preferred embodiment, constant ω iget 1 under normal circumstances.
S2: utilize least square method, processes in real time to the pressure of the drill gathered in drilling process, torque data, obtains the pressure of the drill and torque function and closes and be:
Wherein: f (x i) be real-time the pressure of the drill, unit is KN; F (x) is real-time the pressure of the drill variable, and unit is KN; x jfor real-time moment of torsion, unit is KNm; X is moment of torsion independent variable, and unit is KNm; ω ifor constant; S *x () is the pressure of the drill and torque function relation; it is one group of difference basic function; for difference basis function values corresponding under real-time the pressure of the drill; c jfor the coefficient utilizing least square method to want identification; N is 1; M is counting sampling point value.
prediction equation be:
Wherein: first difference basic function; second difference basic function; α 1for coefficient.
In a preferred embodiment, constant ω iget 1 under normal circumstances.
S3: in drilling process, drilling parameter adjustment, by the restriction of drill top-drive nominal torque, within the scope of drill top-drive nominal torque, utilizes lagrange-interpolation, thus draws the functional relation of moment of torsion and drill speed.
P 3 ( x ) = &Sigma; i = 0 3 ( &Pi; j = 0 j &NotEqual; i 3 x - x 1 x i - x j ) y i ,
Wherein: x i, x jfor drill speed difference point; X is drill speed independent variable; y ifor moment of torsion interpolation point, unit is KNm; P 3x () is moment of torsion and drill speed functional relation.
S4: to integrate in S2 moment of torsion and drill speed functional relation in the pressure of the drill and torque function relation and S3, the pressure of the drill under the restriction of drill top-drive nominal torque and the first security window of drill speed can be obtained, security window mentioned here is for meet under drill top-drive nominal torque, the pressure of the drill and the scope frame of drill speed in its plane represented, the pressure of the drill and drill speed functional relation are expressed as follows:
WOB＝aRPM 3+bRPM 2+cRPM+d，
Wherein: WOB is the pressure of the drill, unit is KN; RPM is drill speed, and unit is rev/min; A, b, c, d are coefficient.
S5: utilize drilling rod can bear peak torque is subject to well cleaning capacity impact on the impact of the pressure of the drill and rate of penetration, in conjunction with S4, obtain the pressure of the drill of drill-well operation and the second security window of drill speed, second security window is similar to the first security window, is to meet the scope frame that rate of penetration under well cleaning capacity condition and the pressure of the drill met under drilling rod peak torque are reflected to the pressure of the drill in the pressure of the drill and drill speed plane and rotating speed.
Wherein, the pass of well cleaning capacity and rate of penetration is:
v s = 0.0707 d s ( &rho; s - &rho; d ) 2 / 3 &rho; d 1 / 3 &mu; e 1 / 3 , Q a = &pi; 40 ( d h 2 - d p 2 ) v a
( 1 ) - - - k s = 1 - v s v a
( 2 ) - - - c a = ROP 3600 ( v a - v s ) ( 1 - d s 2 d h 2 ) < 0.5
Wherein: v sfor the gliding speed of landwaste in drilling fluid, unit is m/s; d sfor landwaste diameter, unit is cm; ρ s, ρ dbe respectively landwaste and drilling fluid density, unit is g/cm 3; μ efor drilling fluid effective viscosity, unit is Pas; Q afor current slush pump discharge capacity, unit is L/s; d h, d pfor hole diameter and drill string external diameter, unit is cm; v afor drilling fluid is in the average upward velocity of annular space, unit is metre per second (m/s) m/s; k sfor landwaste lifting efficiency; c afor solid concentration in annular space, dimensionless; ROP is rate of penetration, and unit is m/s.
S6: utilize the functional relation between rate of penetration and the pressure of the drill in S1, drill speed, obtain the rate of penetration isohypse in the pressure of the drill and drill speed plane and obtain target rate of penetration in conjunction with Current mechanical drilling speed.
S7: the capacity usage ratio considering drill bit, the capacity usage ratio of drill bit is reflected in the pressure of the drill and drill speed plane, obtain mechanical ratio energy isohypse, in conjunction with the target rate of penetration in S6, obtain drill bit efficiency optimization isohypse, drill bit efficiency optimization isohypse comprises mechanical ratio energy isohypse and target rate of penetration.
Wherein, mechanical ratio can be with the functional relation of drill speed, rate of penetration, the pressure of the drill:
MSE = p &times; ( 4 &times; WOB &pi;d B 2 + 480 &times; RPM &times; ( c 0 WOB + c 1 ) d B 2 &times; ROP )
Wherein: MSE is mechanical ratio energy, unit is MPa; WOB is the pressure of the drill, and unit is N; RPM is drill speed, and unit is rev/min; ROP is rate of penetration, and unit is m/hr; P is capacity usage ratio; d bfor bit diameter, unit is mm; c 0, c 1for coefficient.
S8: the restriction being subject to the second security window of the pressure of the drill and drill speed by the drill bit efficiency optimization isohypse of gained in S7, in the second security window of the pressure of the drill and drill speed, the pressure of the drill that drill bit efficiency value is the highest and drill speed parameters combination are recommends to combine.
The present invention is by the mutual functional relation between each parameters such as rate of penetration, the pressure of the drill, drill speed, moment of torsion, the pressure of the drill and drill speed are limited within the scope of peak torque that nominal torque and drilling rod can bear, and in conjunction with the impact of well cleaning capacity on above-mentioned parameter, thus achieve the uncontrollable factor in drilling process is considered in drilling optimization method on the impact of drilling parameter in real time, the pressure of the drill of recommendation and drill speed parameters combination are informed operating personnel, can bit speed be improved, energy-conservation effect can be reached simultaneously.
In an embodiment provided by the invention, the peak torque that in S5, drilling rod bears is determined by the drilling rod selected, drilling rod can bear the affect calculation procedure of peak torque on the pressure of the drill: the pressure of the drill obtained according to S2 and the functional relation of moment of torsion, drilling rod being can bear peak torque substitutes in the functional relation of the pressure of the drill and moment of torsion, the pressure of the drill corresponding under obtaining peak torque, and be reacted in the plane of the pressure of the drill and drill speed.
In another embodiment provided by the invention, the calculation procedure that affects that rate of penetration is subject to well cleaning capacity comprises: obtain the limit mechanical drilling speed under current slush pump discharge capacity according to the relation of well cleaning capacity and rate of penetration; Limit mechanical drilling speed is substituted into the functional relation between the rate of penetration that obtains of S1 and the pressure of the drill, drill speed, obtain the pressure of the drill under the impact of well cleaning capacity and drill speed relation, thus in conjunction with S4, the impact of well cleaning capacity on rate of penetration is reflected in the plane of the pressure of the drill and drill speed, in conjunction with the pressure of the drill under peak torque, obtain the second security window of the pressure of the drill and drill speed.
In another embodiment provided by the invention, the step of the rate of penetration obtained under current slush pump discharge capacity according to the relation of well cleaning capacity and rate of penetration is:
Utilize formula calculate the average upward velocity v of drilling fluid at annular space a, wherein, current slush pump discharge capacity Q acan be recorded by flow control equipment, hole diameter d hwith drill string outside diameter d pfor known quantity;
Utilize formula calculate the gliding speed v of landwaste in drilling fluid s, wherein, cuttings density ρ s, drilling fluid density ρ dand drilling fluid effective viscosity μ ecan be obtained by Drilling Design;
Work as formula when being more than or equal to 0.5, shaft bottom landwaste can be removed in time, according to formula under calculating current slush pump discharge capacity, namely under current borehole cleaning capacity, the limit mechanical drilling speed that can reach;
Work as formula when being less than 0.5, slush pump discharge capacity is in unreasonable state, needs to adjust slush pump discharge capacity, to remove drilling cuttings in time.
In an embodiment provided by the invention, S6 is according to Current mechanical drilling speed, according to regulating step size settings target rate of penetration.When drilled strata is hard formation, when rate of penetration excursion is 1m/h-9m/h, the adjustment step-length of target rate of penetration is 1m/h; When drilled strata is extremely hard formation, the adjustment step-length of rate of penetration is 0.5m/h; When drilled strata is soft formation, rate of penetration reaches more than 20m/h, then the adjustment step-length of target rate of penetration can be decided to be 10m/h.
The adjustment step value provided in above-described embodiment is not intended to limit the present invention, can choose other values flexibly depending on actual conditions.
In an embodiment provided by the invention, the drill bit capacity usage ratio in S7 chooses 0.35, makes drill bit be in optimum capacity state.
Drilling well provided by the invention energy-conservation navigation optimization method can provide a suggestive the pressure of the drill and rotary speed parameter to coordinate for drilling operator, drilling operator is instructed constantly to revise the pressure of the drill and rotating speed with creeping into situation change, ensure that drill-well operation is in best broken rock state always, thus bit speed is greatly improved, the present invention considers the capacity usage ratio of drill bit, thus make drill bit be in a preferably state, reduce the consumption of energy consumption.
Drilling operator can also be allowed to understand current drilling conditions and rate of penetration variation tendency by the present invention, and can the pressure of the drill of offering suggestions property and rotary speed parameter coordinate.Topmost advantage is to which eliminate in drilling process the blindness adjusting parameter and the erroneous judgement of creeping into by rule of thumb, for Drilling optimization operation provides the foundation of quantification.

Claims (7)

1. a drilling well energy-conservation speed-raising navigation optimization method, it is characterized in that, described optimization method comprises:
The rate of penetration gathered in step a pair drilling process, the pressure of the drill, drill speed data process in real time, by cutting depth, obtain the functional relation between described rate of penetration and described the pressure of the drill, described drill speed, the pass between described cutting depth and described rate of penetration, described drill speed is:
S * = 5 &times; ROP 3 &times; RPM ,
Wherein: S *for cutting depth, unit is millimeter, ROP rate of penetration, and unit is that rice is per hour; RPM is drill speed, and unit is rpm;
Utilize least square method, the pass obtained between described cutting depth and described the pressure of the drill is:
Wherein: f (x i) be the real-time cutting degree of depth, unit is millimeter; F (x) is real-time cutting depth variable, and unit is millimeter; x ifor real-time the pressure of the drill, unit is thousand Ns; X is the pressure of the drill independent variable, and unit is thousand Ns; ω ifor constant; S *x () is cutting depth and the pressure of the drill functional relation; it is one group of difference basic function; for difference basis function values corresponding under real-time the pressure of the drill; c jfor the coefficient utilizing least square method to want identification; N is 1; M is counting sampling point value;
prediction equation be:
Wherein: first difference basic function; second difference basic function; α 1for coefficient;
Step 2 utilizes least square method, processes in real time the described the pressure of the drill gathered in drilling process, described torque data, obtains described the pressure of the drill and described torque function and closes and be:
Wherein: f (x i) be real-time the pressure of the drill, unit is thousand Ns; F (x) is real-time the pressure of the drill variable, and unit is thousand Ns; x jfor real-time moment of torsion, unit is thousand Ns of rice; X is moment of torsion independent variable, and unit is thousand Ns of rice; ω ifor constant; S *x () is the pressure of the drill and torque function relation; it is one group of difference basic function; for difference basis function values corresponding under real-time the pressure of the drill; c jfor the coefficient utilizing least square method to want identification; N is 1; M is counting sampling point value;
prediction equation be:
Wherein: first difference basic function; second difference basic function; α 1for coefficient;
Step 3 is in drilling process, and drilling parameter adjustment, by the restriction of drill top-drive nominal torque, within the scope of described drill top-drive nominal torque, utilizes lagrange-interpolation, thus draws the functional relation of described moment of torsion and described drill speed:
P 3 ( x ) = &Sigma; i = 0 3 ( &Pi; j = 0 j &NotEqual; i 3 x - x i x i - x j ) y i ,
Wherein: x i, x jfor drill speed difference point; X is drill speed independent variable; y ifor moment of torsion interpolation point, unit is thousand Ns of rice; P 3x () is moment of torsion and drill speed functional relation;
Moment of torsion and described drill speed functional relation described in the pressure of the drill described in step 4 integration step two and described torque function relation and step 3, can obtain the described the pressure of the drill under the restriction of described drill top-drive nominal torque and the first security window of described drill speed, described the pressure of the drill and described drill speed functional relation are expressed as follows:
WOB＝aRPM 3+bRPM 2+cRPM+d，
Wherein: WOB is the pressure of the drill, unit is thousand Ns; RPM is drill speed, and unit is rpm; A, b, c, d are coefficient;
Step 5 utilize drilling rod can bear peak torque is subject to well cleaning capacity impact on the impact of described the pressure of the drill and described rate of penetration, integrating step four, obtains described the pressure of the drill of drill-well operation and the second security window of described drill speed;
Wherein, the pass of well cleaning capacity and rate of penetration is:
v s = 0.0707 d s ( &rho; s - &rho; d ) 2 / 3 &rho; d 1 / 3 &mu; e 1 / 3 , Q a = &pi; 40 ( d h 2 - d p 2 ) v a
k s = 1 - v s v a - - - ( 1 )
c a = ROP 3600 ( v a - v s ) ( 1 - d s 2 d h 2 ) < 0.5 - - - ( 2 )
Wherein: v sfor the gliding speed of landwaste in drilling fluid, unit is metre per second (m/s); d sfor landwaste diameter, unit is centimetre; ρ s, ρ dbe respectively landwaste and drilling fluid density, unit is gram every cubic centimetre; μ efor drilling fluid effective viscosity, unit is pascal second; Q afor current slush pump discharge capacity, unit is per second for rising; d h, d pfor hole diameter and drill string external diameter, unit is centimetre; v afor drilling fluid is in the average upward velocity of annular space, unit is metre per second (m/s); k sfor landwaste lifting efficiency; c afor solid concentration in annular space, dimensionless; ROP is rate of penetration, and unit is metre per second (m/s);
Step 6 utilizes the functional relation between rate of penetration described in step one and described the pressure of the drill, described drill speed, obtains the rate of penetration isohypse in described the pressure of the drill and described drill speed plane and obtains target rate of penetration in conjunction with Current mechanical drilling speed;
Step 7 considers the capacity usage ratio of drill bit, the capacity usage ratio of described drill bit is reflected in described the pressure of the drill and described drill speed plane, obtain mechanical ratio energy isohypse, described target rate of penetration in integrating step six, obtain drill bit efficiency optimization isohypse, described drill bit efficiency optimization isohypse comprises mechanical ratio energy isohypse and described target rate of penetration;
Wherein, described mechanical ratio can be with the functional relation of drill speed, rate of penetration, the pressure of the drill:
MSE = p &times; ( 4 &times; WOB &pi;d B 2 + 480 &times; RPM &times; ( c 0 WOB + c 1 ) d B 2 &times; ROP )
Wherein: MSE is mechanical ratio energy, unit is megapascal (MPa); WOB is the pressure of the drill, and unit is newton; RPM is drill speed, and unit is rpm; ROP is rate of penetration, and unit is that rice is per hour; P is capacity usage ratio; d bfor bit diameter, unit is millimeter; c 0, c 1for coefficient;
Step 8 is subject to the restriction of described second security window of described the pressure of the drill and described drill speed by the described drill bit efficiency optimization isohypse of gained in described step 7, in described second security window of described the pressure of the drill and described drill speed, the pressure of the drill that drill bit efficiency value is the highest and drill speed parameters combination are recommends to combine.
2. drilling well as claimed in claim 1 energy-conservation speed-raising navigation optimization method, it is characterized in that, the peak torque that in described step 5, drilling rod bears is determined by the drilling rod selected, and drilling rod can bear the affect calculation procedure of peak torque on the pressure of the drill and is:
The described the pressure of the drill obtained according to step 2 and the functional relation of described moment of torsion, can bear peak torque by described drilling rod and substitute in the functional relation of the pressure of the drill and moment of torsion, obtains corresponding the pressure of the drill.
3. drilling well as claimed in claim 2 energy-conservation speed-raising navigation optimization method, it is characterized in that, the calculation procedure that affects that rate of penetration is subject to well cleaning capacity comprises:
The limit mechanical drilling speed under current slush pump discharge capacity is obtained according to the relation of well cleaning capacity and rate of penetration;
Functional relation between the described rate of penetration obtained according to step one and described the pressure of the drill, described drill speed, obtains the described the pressure of the drill under the impact of well cleaning capacity and described drill speed relation.
4. the energy-conservation speed-raising of drilling well as claimed in claim 3 is navigated optimization method, it is characterized in that, the step of the limit mechanical drilling speed obtained under current slush pump discharge capacity according to the relation of well cleaning capacity and rate of penetration is:
Utilize formula calculate the average upward velocity v of drilling fluid at annular space a;
Utilize formula calculate the gliding speed v of landwaste in drilling fluid s;
Work as formula when being more than or equal to 0.5, shaft bottom landwaste can be removed in time, according to formula under calculating current slush pump discharge capacity, namely under current borehole cleaning capacity, the limit mechanical drilling speed that can reach;
Work as formula when being less than 0.5, slush pump discharge capacity is in unreasonable state, needs to adjust, to remove drilling cuttings in time described slush pump discharge capacity.
5. drilling well as claimed in claim 4 energy-conservation speed-raising navigation optimization method, is characterized in that, described step 6 foundation Current mechanical drilling speed, according to target rate of penetration described in adjustment step size settings,
When drilled strata is hard formation, when rate of penetration excursion is 1m/h-9m/h, the adjustment step-length of described target rate of penetration is 1m/h;
When drilled strata is soft formation, rate of penetration reaches more than 20m/h, then the adjustment step-length of described target rate of penetration can be decided to be 10m/h.
6. drilling well as claimed in claim 5 energy-conservation speed-raising navigation optimization method, it is characterized in that, when drilled strata is extremely hard formation, when rate of penetration excursion is 1m/h-9m/h, the described adjustment step-length of rate of penetration is 0.5m/h.
7. drilling well as claimed in claim 3 energy-conservation speed-raising navigation optimization method, it is characterized in that, the drill bit capacity usage ratio in described step 7 chooses 0.35.
CN201410571532.0A 2014-10-23 2014-10-23 Drilling energy-saving acceleration navigation optimizing method Active CN104453841B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410571532.0A CN104453841B (en) 2014-10-23 2014-10-23 Drilling energy-saving acceleration navigation optimizing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410571532.0A CN104453841B (en) 2014-10-23 2014-10-23 Drilling energy-saving acceleration navigation optimizing method

Publications (2)

Publication Number Publication Date
CN104453841A true CN104453841A (en) 2015-03-25
CN104453841B CN104453841B (en) 2017-02-15

Family

ID=52900515

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410571532.0A Active CN104453841B (en) 2014-10-23 2014-10-23 Drilling energy-saving acceleration navigation optimizing method

Country Status (1)

Country Link
CN (1) CN104453841B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105401935A (en) * 2015-11-30 2016-03-16 中国石油天然气集团公司 Method and device for calculating well drilling pressure and drilling pressure indicating equipment
CN109281649A (en) * 2018-08-13 2019-01-29 中国石油天然气集团有限公司 Drilling optimization method and device
CN109441342A (en) * 2018-10-23 2019-03-08 成都科盛石油科技有限公司 A kind of drilling accelerated method in shale formation
CN110763383A (en) * 2018-07-25 2020-02-07 中国石油化工股份有限公司 Method for determining torque of drill bit and method for determining working efficiency of drill bit
CN111434886A (en) * 2019-01-15 2020-07-21 中国石油化工股份有限公司 Mechanical drilling speed calculation method and device for drilling process
CN111520122A (en) * 2020-03-27 2020-08-11 中国石油化工股份有限公司石油工程技术研究院 Mechanical drilling speed prediction method, device and equipment
CN113756792A (en) * 2020-06-02 2021-12-07 中国石油天然气股份有限公司 Method for improving mechanical drilling speed
CN114856540A (en) * 2022-05-11 2022-08-05 西南石油大学 Horizontal well mechanical drilling speed while drilling prediction method based on online learning
CN117703344A (en) * 2024-02-01 2024-03-15 成都三一能源环保技术有限公司 Drilling parameter adjusting method based on data analysis

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368108A (en) * 1993-10-26 1994-11-29 Schlumberger Technology Corporation Optimized drilling with positive displacement drilling motors
CN1214755A (en) * 1996-03-25 1999-04-21 装饰工业公司 Method of regulating drilling conditions applied to well bit
US20060162962A1 (en) * 2005-01-26 2006-07-27 Koederitz William L Wellbore operations monitoring & control systems & methods
CN101899969A (en) * 2010-03-24 2010-12-01 苏州锐石能源开发技术有限公司 Real-time on-site drilling full parameter optimization method
CN103046918A (en) * 2011-10-13 2013-04-17 中国石油天然气集团公司 Method and system for optimizing drilling parameters
CA2863586A1 (en) * 2012-02-24 2013-08-29 Landmark Graphics Corporation Determining optimal parameters for a downhole operation
CN103790568A (en) * 2014-01-07 2014-05-14 西南石油大学 Real-time drilling parameter and efficiency optimization method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5368108A (en) * 1993-10-26 1994-11-29 Schlumberger Technology Corporation Optimized drilling with positive displacement drilling motors
CN1214755A (en) * 1996-03-25 1999-04-21 装饰工业公司 Method of regulating drilling conditions applied to well bit
US20060162962A1 (en) * 2005-01-26 2006-07-27 Koederitz William L Wellbore operations monitoring & control systems & methods
CN101899969A (en) * 2010-03-24 2010-12-01 苏州锐石能源开发技术有限公司 Real-time on-site drilling full parameter optimization method
CN103046918A (en) * 2011-10-13 2013-04-17 中国石油天然气集团公司 Method and system for optimizing drilling parameters
CA2863586A1 (en) * 2012-02-24 2013-08-29 Landmark Graphics Corporation Determining optimal parameters for a downhole operation
CN103790568A (en) * 2014-01-07 2014-05-14 西南石油大学 Real-time drilling parameter and efficiency optimization method

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105401935A (en) * 2015-11-30 2016-03-16 中国石油天然气集团公司 Method and device for calculating well drilling pressure and drilling pressure indicating equipment
CN110763383A (en) * 2018-07-25 2020-02-07 中国石油化工股份有限公司 Method for determining torque of drill bit and method for determining working efficiency of drill bit
CN109281649A (en) * 2018-08-13 2019-01-29 中国石油天然气集团有限公司 Drilling optimization method and device
CN109441342A (en) * 2018-10-23 2019-03-08 成都科盛石油科技有限公司 A kind of drilling accelerated method in shale formation
CN109441342B (en) * 2018-10-23 2020-04-07 成都科盛石油科技有限公司 Drilling acceleration method in shale formation
CN111434886B (en) * 2019-01-15 2021-12-28 中国石油化工股份有限公司 Mechanical drilling speed calculation method and device for drilling process
CN111434886A (en) * 2019-01-15 2020-07-21 中国石油化工股份有限公司 Mechanical drilling speed calculation method and device for drilling process
CN111520122A (en) * 2020-03-27 2020-08-11 中国石油化工股份有限公司石油工程技术研究院 Mechanical drilling speed prediction method, device and equipment
CN111520122B (en) * 2020-03-27 2023-05-30 中国石油化工股份有限公司石油工程技术研究院 Method, device and equipment for predicting mechanical drilling speed
CN113756792A (en) * 2020-06-02 2021-12-07 中国石油天然气股份有限公司 Method for improving mechanical drilling speed
CN113756792B (en) * 2020-06-02 2023-09-26 中国石油天然气股份有限公司 Method for improving mechanical drilling speed
CN114856540A (en) * 2022-05-11 2022-08-05 西南石油大学 Horizontal well mechanical drilling speed while drilling prediction method based on online learning
CN114856540B (en) * 2022-05-11 2024-05-28 西南石油大学 Horizontal well mechanical drilling speed while drilling prediction method based on online learning
CN117703344A (en) * 2024-02-01 2024-03-15 成都三一能源环保技术有限公司 Drilling parameter adjusting method based on data analysis
CN117703344B (en) * 2024-02-01 2024-04-30 成都三一能源环保技术有限公司 Drilling parameter adjusting method based on data analysis

Also Published As

Publication number Publication date
CN104453841B (en) 2017-02-15

Similar Documents

Publication Publication Date Title
CN104453841A (en) Drilling energy-saving acceleration navigation optimizing method
EP3385497B1 (en) Method of optimizing drilling operation using empirical data
CN103046918B (en) Method and system for optimizing drilling parameters
US10480249B2 (en) Hybrid mechanical-laser drilling equipment
CN106545327B (en) Intelligent driller&#39;s control system of rig
CN104695937A (en) Well drilling comprehensive speed accelerating optimization expert system
CN106640035A (en) VFD control system and method for automatic optimization of drilling parameters
AU2012397838B2 (en) Systems and methods for hydraulic balancing downhole cutting tools
RU2688652C2 (en) Methods of operation of downhole equipment based on conditions in wellbore
CN106593293A (en) High-speed axial percussion drilling method and device
CN110671055B (en) Design method of PDC drill bit with conical teeth
CN105525868B (en) A kind of pulsating double direction impulse device
Deng et al. Bit optimization method for rotary impact drilling based on specific energy model
CN106257463B (en) A kind of bit performance evaluation method and system
Sapińska-Śliwa et al. Rotary-percussion drilling method-historical review and current possibilities of application
CN105156021B (en) Borer system and boring method based on self adaptation down-hole equipment tool-face dynamic control
RU2642590C1 (en) Method of optimal adaptive control of oil-gas wells drilling process on three mode parameters
CN105134163B (en) A kind of kinetic-control system and method for adaptive down-hole equipment tool-face
CN105156091B (en) Borer system and boring method based on adaptive down-hole equipment tool-face dynamic control
US8799198B2 (en) Borehole drilling optimization with multiple cutting structures
CN114382427A (en) Horizontal well debris bed treatment method and device
Muchendu et al. Determination of optimum drilling parameters using 8.5 inch tricone bits in olkaria geothermal steamfield, Kenya
Ramdani et al. Enhancing sustainability through drilling machine efficiency: A comparative analysis of TOPSIS and VIKOR methods for energy optimization
CN202578517U (en) Air hammer drill bit capable of back redressing
Carpenter Faster rate of penetration in hard chalk: proving a new hypothesis for drilling dynamics

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant