CN114763732A - Pressure control casing drilling method for underground injection pressure containing stratum - Google Patents
Pressure control casing drilling method for underground injection pressure containing stratum Download PDFInfo
- Publication number
- CN114763732A CN114763732A CN202210022276.4A CN202210022276A CN114763732A CN 114763732 A CN114763732 A CN 114763732A CN 202210022276 A CN202210022276 A CN 202210022276A CN 114763732 A CN114763732 A CN 114763732A
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- drilling
- well
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- casing
- cementing
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- 238000005553 drilling Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000002347 injection Methods 0.000 title claims abstract description 22
- 239000007924 injection Substances 0.000 title claims abstract description 22
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 230000008569 process Effects 0.000 claims abstract description 13
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 230000007935 neutral effect Effects 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- E21B7/00—Special methods or apparatus for drilling
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/08—Controlling or monitoring pressure or flow of drilling fluid, e.g. automatic filling of boreholes, automatic control of bottom pressure
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
-
- 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
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Geophysics (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
A method of drilling a well with a controlled pressure casing for use downhole with injection pressure of a subterranean formation. The method mainly solves the problems that the yield is influenced when the existing three-mining casing damage well is drilled and shut down to renew the well, the three-mining development effect is influenced, and the drilling safety is influenced when the well is not drilled and shut down. The method is characterized in that: firstly, drilling a well, secondly, cementing the well, installing pressure control drilling equipment and testing the pressure; secondly, drilling a well in a non-oil layer section, testing by using a hydraulic pressurization anti-inclination tool, and recording the pressure of a neutral pipe and the displacement of a pump in the process; drilling a well in a second casing drilling section, and cementing a well; and (6) logging. By adopting the pressure-controlled casing drilling method for underground injection pressure containing stratum, a well can be drilled and updated under the condition of not stopping the well, the injection-production relation of a casing damage well group can be completed in time, the injection of a drilling area is not influenced, and the normal block development effect is ensured.
Description
Technical Field
The invention relates to the field of oil fields, in particular to a pressure control casing drilling method for underground injection pressure containing stratum.
Background
After years of oilfield development, the number of casing damage problem wells of a three-mining block is increasing. And according to the capacity construction requirement of the three mining blocks, more and more wells need to be drilled. However, conventional drilling of a renewal well has the following problems:
(1) the drill bit has great influence on the yield: because the distribution of the renewal wells is scattered, pressure reduction (so-called 'drilling shut-in') is needed in the conventional drilling, for some areas with high well pattern density, 40 water injection (entering) wells are shut-in averagely in the drilling shut-in range of 450 meters of one scattered renewal well, the influence time reaches about 35 days, the influence of the conventional drilling of one renewal well on oil mass is large, and the pressure change of a local well area is large, so that the casing protection is not facilitated.
(2) The effect of tertiary oil recovery development is influenced by updating the well drilling shut-in: according to the requirement of an oil displacement scheme, continuous injection is required in an injection period in order to ensure the development effect of a three-mining positive injection block, so that casing damage wells in the three-mining block cannot be updated in time, and the injection and the mining of a local well pattern are incomplete; if the updating well is a three-recovery well pattern well, and the updating is carried out after one period is finished, the reserve of the updating well area is not effectively used in the tertiary oil recovery process, and the tertiary oil recovery can not be carried out any more; if drilling shut and pressure reduction are adopted, the gathered section is jammed and relaxed, and the development effect and benefit of the third mining are influenced.
(3) The drilling safety and the cementing quality under the conventional drilling conditions are greatly influenced by the non-drilling condition: the local extra-high pressure of the static pressure of the stratum can be difficult to determine, and the superposition risk of shallow gas and the like can exist in partial blocks.
At present, aiming at the geological conditions, in order to ensure the drilling safety and the cementing quality, the conventional well updating is completed under the condition of drilling shutdown, and the well updating is difficult to drill under the condition of not drilling shutdown.
Disclosure of Invention
The invention provides a pressure-controlled casing drilling method for underground injection pressure containing stratum, which can drill and renew wells under the condition of not stopping the wells, not only can timely perfect the casing damage well group injection and production relationship, but also can not influence the injection of a drilling area, and ensure the normal block development effect.
The technical scheme of the invention is as follows: a method of drilling a well with a controlled pressure casing downhole containing formation injection pressure, comprising the steps of: firstly, drilling a well, secondly, cementing the well, installing pressure control drilling equipment and testing the pressure; drilling a well in a non-oil layer section, testing a hydraulic pressurization anti-deviation tool, and recording the pressure of a neutral pipe and the pump displacement in the process; drilling a well in a second casing drilling section, and cementing a well; and (6) logging.
Further, after the well is first opened, the roller bit drills the plug, the drill continues to drill for 5-10 m, and then pressure control drilling equipment is installed.
Further, when drilling in the second-casing drilling section, firstly, the pipe column is put at the bottom of the well, rotary drilling is carried out, the circulation and the connection of the stand column are carried out to control the pressure to drill the well, partial casings are removed after drilling, and the removed casings are connected after reaming and drifting;
further, before secondary well cementation, the length of a short section of the casing pipe is adjusted to ensure that the coupling just exposes out of the casing head after a sufficient pocket is reserved; connecting the top connection section, wherein the upper buckling torque is the lowest upper buckling torque; connecting a drilling pump and circulating; and (4) performing a formation leakage test.
Further, when secondary well cementation is carried out, a rotary well cementation cement head is connected, isolation liquid is injected, cement is injected, a rubber plug is pressed, the displacement is carried out, and a casing pipe pressure test is carried out; and closing the well sealer after well cementation, and adding back pressure to the annulus for curing.
Further, after the second-opening well cementation, the connecting top joint is disassembled, and the ring iron is installed.
The invention has the following beneficial effects: the pressure control sleeve drilling method for drilling under pressure uses a special sleeve to drill, applies pressure control equipment and a pressure control method to accurately control annular pressure in a borehole, directly cementing the borehole after drilling, and has the advantages of shortening the drilling period, simplifying the drilling process, reducing the drilling accidents of blowout, leakage and the like. The method has the advantages that the well drilling process is the casing running process and the well cementation can be realized after the well drilling process is finished, so that the accident that the bottom hole pressure is out of control during the process of' electrical logging and casing running after the well drilling process in the conventional well drilling process is reduced.
Detailed Description
The invention is further illustrated below:
a method of drilling a well with a controlled pressure casing downhole containing formation injection pressure, comprising the steps of:
and (I) drilling, well opening and well cementing, after well opening and well cementing, plugging by using a roller bit, continuously drilling for a certain depth of 5-10 m, then installing pressure control drilling equipment, debugging and pressure testing the pressure control drilling equipment, performing combined debugging, and starting construction after normal test operation.
And (II) drilling a well in a non-oil interval with two openings, selecting a hydraulic pressurization anti-deviation tool, opening the hydraulic pressurization anti-deviation tool to be closed through top drive, testing and recording the pressure of a neutral pipe and the displacement of a pump in the process so as to judge whether the tool is normal or not, determine whether the tool is unblocked or not and determine whether the pressure of fluid passing through the tool is normal or not.
(III) drilling in a second casing pipe drilling section, and cementing in a second casing pipe:
a. the two sleeves are connected to form an upright column, the upper end of each upright column is connected with a driving rod protection joint, and the lower end of each upright column is provided with a male protection wire and vertically arranged on a drill floor;
b. lowering the pipe column to the bottom of the well, rotary drilling, recycling, connecting the upright column to the casing pipe, controlling pressure and drilling, removing part of the casing pipe after drilling, reaming and dredging the well, and then connecting the removed casing pipes;
c. connecting a well cementation pipe column, adjusting the length of a short section of the casing pipe, and ensuring that a coupling just exposes out of a casing head after a sufficient pocket is left; the connection top section is connected, and the screwing-on torque is the lowest screwing-on torque, so that connection and sealing are ensured, and the screw is conveniently unscrewed after well cementation; connecting a drilling pump, circulating and performing a stratum leakage test;
d. connecting a rotary cementing head, drilling a spacer fluid, cementing (lifting and lowering a cementing pipe column, and also rotating the cementing pipe column), and if the circulating pump is high in pressure, the cement slurry does not flow through a drill bit and a screw drill, then throwing the ball and suppressing the pressure to open a bypass valve; pressing a rubber plug, and replacing (lifting and lowering the well cementation pipe column, or rotating the well cementation pipe column without performing simultaneously) the rubber plug; testing the pressure of the sleeve, after the pressure testing is finished, opening the sleeve for waiting for condensation, closing the sleeve for waiting for condensation, and increasing the pressure of the closed sleeve to 1-2 MPa greater than the annulus balance pressure; closing the well sealer after cementing, and adding back pressure to the annulus for waiting for setting; if the check valve is out of order, the pressure difference between the inside and the outside of the pipe is calculated, and the pressure is held and the waiting solidification is carried out.
e. Removing the top joint and mounting a ring iron;
f. logging: and measuring geological parameters and engineering parameters.
Aiming at the problem that scattered updating well drilling closure affects yield, the well drilling method adopts a mode of applying back pressure to the annulus of the well head, provides a scheme for drilling and completing scattered updating well pressure control casing pipes, achieves the purpose of perfecting a well pattern, and reduces the influence on the yield. When drilling, circulating and connecting a single joint, applying back pressure to a wellhead by adjusting an automatic throttling manifold; the well is completed by one-time drilling, and the well is directly fixed, so that the pressure is controlled in the whole process, and the control risk in the process of tripping and casing running is reduced; meanwhile, taking the peripheral well into account, and logging after casing; and (4) applying annular back pressure to the wellhead by adjusting the automatic throttling manifold in well cementation displacement and waiting coagulation. Aiming at the problem that the stratum fracture pressure of a layer in a shaft is higher than the pore pressure of the stratum, in order to reduce the problem that drilling fluid leaks the stratum, the density of the drilling fluid is reduced, pressure control equipment and a pressure control method are applied to accurately control the annular pressure in the shaft, and safe drilling without collapse, leakage and blowout is ensured. By using the hydraulic pressurization anti-deviation tool, the casing can be prevented from being bent by axial compression under the condition of not using a drill collar, well deviation is prevented, drilling pressure is flexibly applied to the drill bit, and vibration damage of rock breaking of the drill bit to the casing is isolated.
Claims (6)
1. A method of drilling a well with a controlled pressure casing downhole containing formation injection pressure, comprising the steps of: firstly, drilling a well, secondly, cementing the well, installing pressure control drilling equipment and testing the pressure; drilling a well in a non-oil layer section, testing a hydraulic pressurization anti-deviation tool, and recording the pressure of a neutral pipe and the pump displacement in the process; drilling a well in a second casing drilling section, and cementing a well; and (6) logging.
2. The method of claim 1 for drilling a controlled pressure casing downhole containing formation injection pressure, wherein: after the well is first opened, the roller bit drills the plug, the drill continues to drill for 5-10 m, and then pressure control drilling equipment is installed.
3. The method of claim 2 for drilling a controlled pressure casing downhole containing formation injection pressure, wherein: when drilling in the two-casing drilling section, the pipe column is firstly put to the bottom of the well, rotary drilling is carried out, recirculation and connection of the stand column are carried out to control pressure drilling, partial casings are removed after drilling, and the removed casings are connected after reaming and drifting.
4. The method of claim 3 for drilling a controlled pressure casing downhole containing formation injection pressure, wherein: before second-opening well cementation, the length of a short section of the casing pipe is adjusted to ensure that the casing head just exposes out of the coupling after a sufficient pocket is reserved; connecting the top connection section, wherein the upper buckling torque is the lowest upper buckling torque; connecting a drilling pump and circulating; and (4) performing a formation leakage test.
5. The method of claim 4 for drilling a controlled pressure casing downhole containing formation injection pressure, wherein: when the well is opened, connecting a rotary well cementing head, injecting isolation liquid, injecting cement, pressing a rubber plug, replacing, and testing the pressure of the casing; and (5) closing the well sealer after well cementation, and adding back pressure to the annulus for waiting for setting.
6. The method of claim 5 for drilling a controlled pressure casing downhole containing formation injection pressure, wherein: and after second-opening well cementation, detaching the connecting top joint and installing ring iron.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2021100356622 | 2021-01-12 | ||
| CN202110035662.2A CN112780176A (en) | 2021-01-12 | 2021-01-12 | Pressure control casing drilling method for underground injection pressure containing stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114763732A true CN114763732A (en) | 2022-07-19 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110035662.2A Pending CN112780176A (en) | 2021-01-12 | 2021-01-12 | Pressure control casing drilling method for underground injection pressure containing stratum |
| CN202210022276.4A Pending CN114763732A (en) | 2021-01-12 | 2022-01-10 | Pressure control casing drilling method for underground injection pressure containing stratum |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110035662.2A Pending CN112780176A (en) | 2021-01-12 | 2021-01-12 | Pressure control casing drilling method for underground injection pressure containing stratum |
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| Country | Link |
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| CN (2) | CN112780176A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114183070A (en) * | 2021-12-07 | 2022-03-15 | 托普威尔石油技术股份公司 | Drilling method without drilling and closing under pressure |
-
2021
- 2021-01-12 CN CN202110035662.2A patent/CN112780176A/en active Pending
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2022
- 2022-01-10 CN CN202210022276.4A patent/CN114763732A/en active Pending
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| Publication number | Publication date |
|---|---|
| CN112780176A (en) | 2021-05-11 |
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