CN101550826B - Machinery wireless well deviation measurement instrument while drilling - Google Patents
Machinery wireless well deviation measurement instrument while drilling Download PDFInfo
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- CN101550826B CN101550826B CN200910059235A CN200910059235A CN101550826B CN 101550826 B CN101550826 B CN 101550826B CN 200910059235 A CN200910059235 A CN 200910059235A CN 200910059235 A CN200910059235 A CN 200910059235A CN 101550826 B CN101550826 B CN 101550826B
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Abstract
The invention discloses a machinery wireless well deviation measurement instrument while drilling, which is composed of a tooth type measuring device, a pulse generating device and a cylinder body. The pulse generating device is located on the upper end of the tooth type measuring device and is connected with the tooth type measuring device by the inner gear of the cylinder body. When well deviation is measured, the slime pump is closed, the tooth type measuring device is rotated along the rotation of the bracket under the gravity action of the weight block until the gravitational potential energy is minimum; the well deviation angle is expanded by the accelerating gear group device and changed into the displacement of the pulse shaft by the gear in the process; then the pump is opened again, the displacement is changed into the pulse number which is corresponding to the well deviation angle one by one by the pulse generating device and is sent to the ground by the drilling fluid medium, thereby finishing the wireless measuring while drilling of the well deviation exactly and stably. The invention has simple structure, small volume, convenient operation, wide application, can be suitable for well deviation measurement and well quality control for the ground layer environment of high temperature and high pressure deep well and super deep well, and can be applied to the well track measurement of the positioning well, the horizontal well, the big displacement well and the branch well and the controlling engineering.
Description
Technical field
The invention belongs to drilling engineering field in the petroleum natural gas exploration, is a kind of survey tool that is used to measure oil gas well hole deviation.
Technical background
The directional survey instrument is to be widely used in the oil gas well drilling engineering and essential instrument.Along with the drilling technology development, various directional survey instruments constantly occur, and the on-the-spot at present directional survey instrument that uses mainly contains photographic-type, electronic type and mechanical type.Photographic-type directional survey instrument is because operation is difficult, precision is low, and The field reduces gradually.Electronic type directional survey instrument is used for different occasion purposes; Wherein electronics single-point directional survey instrument is a kind of The field straight well deviational survey instrument widely; But service condition is influenced by well depth, temperature, property of drilling fluid etc., and Measuring Time is long, and can not be applied to measurement while drilling.The mechanical type mechanical gage comes into one's own now, and prior mechanical directional survey apparatus structure is complicated, precision is low.At present external instrument has 0.25 °, 0.5 ° and 1.0 ° of three kinds of precision.Chinese patent publication number CN200510042035.2; Open day on July 27th, 2005; The name of innovation and creation is called mechanical wireless drilling inclinometers; This application case discloses that " a kind of oil drilling is with down-hole mechanical formula wireless drilling inclinometers, and it is made up of measuring mechanism, controlling organization, pulse generating unit, damping unit, dummy piston and housing etc.Instrument has a seal casinghousing that separates with the external world, and inside is full of lubrication oil, and measuring mechanism, controlling organization and damping unit are in housing.Advantages such as it has simple in structure, and is easy to use, and the scope of application is wide, and measurement result is stable." see that from disclosure its weak point is that its precision is 0.5 °, and its hydraulic oil expanded by heating under high-temperature condition presses spring also, piston rod can not move, directly cause instrument can not work or signal errors big; In addition, its hole angle measurement category is little, when hole angle exceeds measurement category, needs adjusting angle range regulation cover and angular adjustment ring.Along with the continuous development of petroleum natural gas exploration, deep-well, ultradeep well drilling well are increasing, and the drilling stratum environment is more abominable, require standard higher to wellbore quality, and this just requires hole deviation control strict more; On the other hand; With the continuous progress of boring drilling technology; Special well drilling technologies such as directional well, horizontal well, extended reach well and Multilateral Wells are used also extensive day by day, and these special wells require to comprise that hole deviation is controlled at interior hole trajectory control, could accurately accomplish well how much or geosteering; Final realization geology hits, and realizes good well yield and oil field whole development benefit.Above-mentioned technical field is higher to the requirement of directional survey; Present relevant deviational survey device and instrument be not suitable for the more vertical rapid drilling of high-precision requirement and the Technology Need of accurate hole trajectory control in varying degrees; Need carry out innovative design in principle and method, technology path and technology, and research and develop corresponding product.
Summary of the invention
The object of the present invention is to provide a kind of machinery wireless well deviation measurement instrument while drilling; To improve the directional survey precision; Simplify the downhole instrument structure; Enlarge the measurement category of hole angle, especially in the directional survey of special wells such as the abominable ground environment of high temperature high pressure deep well, ultradeep well and horizontal well, extended reach well, Multilateral Wells, have excellent adaptability and tangible technical advantage, can guarantee wireless drilling measuring well oblique angle quickly and accurately.
The technical scheme that the present invention solves its technical problem is: a kind of machinery wireless well deviation measurement instrument while drilling; Form by tooth-like measurement mechanism, pulse generating unit and cylindrical shell etc.; It is characterized in that the upper end of pulse generating unit, link to each other through tooth bar in the cylindrical shell at tooth-like measurement mechanism; Tooth bar upper end and pulse axle lower ends in the cylindrical shell, its lower end and the engagement of tooth-like measurement mechanism external tooth, the support upper end links to each other through last rolling bearing with cylindrical shell, and its lower end links to each other with following rolling bearing.
Tooth-like measurement mechanism is put shell, speed increasing gear group device, steel plate and support etc. by cake and is formed; The part of cake pendulum shell contains the heavy metal weight, and other part is a hollow shell, and the center of gravity of cake pendulum shell drops on the part that contains weight, and the part that increases the weight of of cake pendulum shell is in the gravitional force position at the end always; The inboard semicircle of cake pendulum shell is a tooth, begins from center of gravity, and to the inboard circle of cake pendulum another point that diameter passed through this center of gravity, another semicircle is anodontia; Speed increasing gear group device is made up of the different gear of a series of diameters; Gear all is fixed on the steel plate.Stent support cake pendulum shell.When the position of increasing the weight of part of cake pendulum shell not at the gravitional force lowest part, under action of gravity, cake pendulum shell produces moment on support, support is rotated, up to the gravitional force of the cake pendulum shell position at the end.The center of gravity of heavy metal weight is arranged in the axle center of support in the tooth-like measurement mechanism.This moment the oblique angle of logging well be want.
The afterbody gear of speed increasing gear group device is called external tooth in the outside of tooth-like measurement mechanism.The semicircle curved tooth engagement that first gear of speed increasing gear group device and cake pendulum shell are inboard.
Tooth bar is arranged in the cylindrical shell, and the tooth bar lower end is not on the axis, and its upper end overlaps with the axis; Tooth bar is the Z font, the lower ends of tooth bar upper end and pulse axle, its lower end and external tooth engagement; The support upper end links to each other with cylindrical shell through last rolling bearing, and rolling bearing linked to each other with bearing under its lower end was passed through.
The present invention compared with prior art has following have novelty and technical advantage:
(1) this instrument belongs to pure frame for movement, and the stable mechanical property of HTHP adverse circumstances is reliable, under conditions such as deep-well, ultradeep well extreme temperature, pressure, also can reliablely and stablely work; The primary structure of tooth-like measurement mechanism is a speed increasing gear group device, and by cake pendulum shell and isolation, the seal request of whole instrument is low, and stable work in work under hot environment can be used for the stable operation of high temperature deep well, the directional survey of ultradeep well oil gas well.
(2) can measure according to being connected with down-hole equipment or other easily, form reliable and secure signalling channel, realize measurement while drilling.The present invention directly amplifies the hole angle of measuring and change into the displacement of pulse axle; And main device is integrated in the tooth-like measurement mechanism of small size; Do not need controlling organization, simplified apparatus structure, size is less than common mechanical formula directional survey instrument; For other downhole tool is practiced thrift out more space; At deep-well, wellbore space that the ultradeep well borehole size is little, patent of the present invention has excellent adaptability and unique technique advantage, is easy to realize integrated with being connected with technology of other underground survey device.
(3) the Mechanics of Machinery intensity of tooth-like measurement mechanism is high, and functional reliability and application life can be greatly improved, compact conformation, and transmission efficiency is high, and the angle multiplication factor is directly proportional with each stage gear ratio of gear train sum of series, increases substantially the precision of measuring hole deviation.
(4) scope of activities of cake pendulum shell is big, in 0 °～180 ° scopes, is doing the time spent and need not encourage instrument and rise and get into ground and carry out angular adjustment with boring deviational survey; Can realize automatically with boring deviational survey; Reduce the non-working time, improve efficiency of measurement, thereby save the directional survey time; Improve bit speed, reduce drilling cost; On the other hand, the directional survey scope is bigger, can be used for being used for straight well, the tiltedly deviational survey work of well types such as straight well, orientation, extended reach well, horizontal well and Multilateral Wells.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is further specified.
Fig. 1 is a kind of structural representation of machinery wireless well deviation measurement instrument while drilling.
Fig. 2 is a kind of tooth-like measurement mechanism operating principle sketch map of machinery wireless well deviation measurement instrument while drilling.
1, a kind of machinery wireless well deviation measurement instrument while drilling; 2, drill collar; 3, drill bit; 4; Head pulse; 5, pulse axle; 6, pulse generating unit; 7, pulse ring; 8, plug; 9, cylindrical shell; 10, go up rolling bearing; 11, support; 12, central axis; 13 tooth-like measurement mechanisms; 14, cake pendulum shell; 15, following rolling bearing; 16, supporting seat; 17, speed increasing gear group device; 18, heavy metal weight; 19, steel plate; 20, semicircle curved tooth; 21, tooth bar, 22, external tooth.
The specific embodiment
Primary structure of the present invention is tooth-like measurement mechanism (13); Its cake pendulum shell (14) separates its internal mechanism and external environment condition again; Reduced seal request, under deep-well, ultradeep well high temperature and high pressure environment condition, worked, speed increasing gear group (17) service behaviour and the structural strength of measurement mechanism are affected by environment also less; Thereby guarantee measurement mechanism normal and stable reliable work state, deviational survey instrument adaptive capacity is strong.
Tooth-like measurement mechanism (13) is made up of cake pendulum shell (14) and speed increasing gear group (17) device etc.Pulse axle (5) links to each other with tooth bar (21), the geometric center and central axis (12) hinge of cake pendulum shell (14), and heavy metal weight (18) part of cake pendulum shell (14) is in the position of gravitional force minimum state always.Accuracy of instrument is mainly by the decision of speed increasing gear group (17) device.The center of gravity of heavy metal weight (18) is positioned at the axle center of support (11) in the tooth-like measurement mechanism; Otherwise; Heavy metal weight (18) is before the minimum potential motion, and there has been the moment that support is rotated in it, and weight need not be rotated just be in minimum potential; The result that apparatus measures obtains is zero, rather than the hole deviation value; In addition; Shown in the tooth-like measurement mechanism operating principle sketch map of a kind of machinery wireless well deviation measurement instrument while drilling of Fig. 2; Suppose to be designed to three grades of speed increasing gear groups, and each stage gear ratio is 101/17, hole angle is 0.10 °; Afterbody gear external tooth (22) radius that meshes with tooth bar (21) is 20.0mm, and then hole angle is through speed increasing gear assembling storing big (101/17)
3Doubly, promptly hole angle amplifies 209.668 times, and then 0.10 ° of hole angle is 0.10 * (101/17) through speed increasing gear group (17) device at the displacement that is changed into pulse axle (5) by tooth bar (21)
3* 20mm, promptly pulse axle (5) is wanted displacement 419mm.If total effect δ of constant errors at different levels, rigging error and the error of backlash of gear
∑Be 50%, the error that the signal that then will obtain on ground is converted into real hole angle is 0.10 ° * (50%)/209.668, is about (2.4 * 10
-4) °, its size can be ignored.According to drilling engineering and downhole tool dimensional requirement, can suitably select progression, each stage gear ratio of gear train, and each gear size.Three grades of general designs or level Four speed increasing gear group just can reach very high degree of precision, fully satisfy the requirement of drilling engineering to hole deviation parameter measurement error.Tooth-like measurement mechanism (13) is high with the flourishing multiple of hole angle, and error is little, Gu the last gained precision height as a result of measuring.
Pulse generating unit (6) is in the top of instrument, and pulse ring (7) links to each other with cylindrical shell, and pulse axle (5) lower end links to each other with tooth bar (21) upper end, and head pulse (4) is fixed on pulse axle (5) upper end, and head pulse (4) is synchronized with the movement with pulse axle (5).The fluid of metering hole in the pulse ring of flowing through (7) is blocked or open-minded at the slurry channel of pulse ring (7), and assorted height of pressure or decline form pressure pulse.The metering hole number of pulse ring (7) is the umber of pulse that instrument can produce at most.So tooth-like measurement mechanism obtains survey and the hole angle of hundred times or thousand times amplifications, change and pass to pulse axle (5) and head pulse (4) through tooth bar (21), the displacement of pulse axle (5) is corresponding one by one with the hole deviation angle.During turn on pump, head pulse (4) moves downward in the process, and is different through the quantity of metering hole, thereby produces and hole angle pulse signal one to one.The hole angle that measure to amplify changes pulse number at last through pulse generating unit, and hole angle is directly proportional with pulse number, has ensured measuring reliability and accuracy.
Further specify operating principle of the present invention below.
A kind of machinery wireless well deviation measurement instrument while drilling (1) places in the top drill collar (3) of drill bit (2).
Before a kind of machinery wireless well deviation measurement instrument while drilling (1) work, under the normal drillng operation condition, head pulse contacts with plug (8) under the hydraulic action of circulating fluid.
When measuring hole deviation, close slush pump, head pulse (4) loses high-voltage high-speed drilling fluid percussion.Under action of gravity, cake pendulum shell contains heavy metal weight (18) part to the minimum position motion of its gravitional force.The hole angle of its measurement is through speed increasing gear group (17) device, and tooth bar (21) is the displacement of pulse axle (5) with the angle change that amplifies, and driving pulse axle (5) and head pulse (4) move upward to certain altitude.During turn on pump, head pulse (4) under the hydraulic action of circulating fluid, moves downward again again, up to contacting with plug (8), till can not moving.Move downward in the process with head pulse (4) at pulse axle (5); Through the metering hole of pulse ring (7), when metering hole overlapped in pulse axle (5) and the pulse ring (7), drilling fluid was because of constricted flow; Pressure raises; Thereby the generation pressure pulse obtains and amplifies hole angle number of pulses one to one, and pulse signal passes to the specific receiving device on ground through the drilling fluid medium of circulation.On the ground, again according to the number of pulses that obtains through data transaction promptly measure the hole angle value.
Below only be to realize a kind of method of the present invention, based on other form of this inventive principle within the scope of the invention.
Claims (6)
1. machinery wireless well deviation measurement instrument while drilling; Form by tooth-like measurement mechanism (13), pulse generating unit (6) and cylindrical shell (9); It is characterized in that described pulse generating unit (6) links to each other with tooth-like measurement mechanism (13) through the tooth bar (21) in the cylindrical shell (9) in the top of instrument; The lower ends of the upper end of tooth bar (21) and pulse axle (5), tooth bar (21) lower end and external tooth (22) engagement; Support (11) upper end links to each other through last rolling bearing (10) with cylindrical shell (9), and its lower end links to each other with following rolling bearing (15).
2. a kind of machinery wireless well deviation measurement instrument while drilling according to claim 1 is characterized in that tooth-like measurement mechanism (13) is made up of cake pendulum shell (14), speed increasing gear group device (17), steel plate (19) and support (11); The part of cake pendulum shell (14) contains the heavy metal weight, and other part is a hollow shell; The inboard semicircle of cake pendulum shell (14) is semicircle curved tooth (20), begins from center of gravity, and to the inboard circle of cake pendulum another point that diameter passed through this center of gravity, another semicircle is anodontia; Speed increasing gear group device (17) is made up of the different gear of a series of diameters; Gear all is fixed on the steel plate (19), and support (11) is supporting cake pendulum shell (14).
3. a kind of machinery wireless well deviation measurement instrument while drilling according to claim 1; It is characterized in that the outside of the afterbody gear of speed increasing gear group device (17) at measurement mechanism; First gear of speed increasing gear group device and semicircle curved tooth (20) engagement, the part that increases the weight of of cake pendulum shell (14) is in the minimum position of gravitional force always.
4. a kind of machinery wireless well deviation measurement instrument while drilling according to claim 1 is characterized in that tooth bar (21) is arranged in the cylindrical shell (9), the lower ends of the upper end of tooth bar (21) and pulse axle (5), tooth bar (21) lower end and external tooth (22) engagement.
5. a kind of machinery wireless well deviation measurement instrument while drilling according to claim 1 is characterized in that the upper end and pulse axle (5) lower ends of the inner tooth bar of cylindrical shell (9) (21), and tooth bar (21) is the Z font.
6. a kind of machinery wireless well deviation measurement instrument while drilling according to claim 1; The upper end that it is characterized in that support (11) links to each other with cylindrical shell (9) through last rolling bearing (10); Rolling bearing (15) linked to each other with supporting seat (16) under its lower end was passed through, and the center of gravity of the interior heavy metal weight of tooth-like measurement mechanism (13) (18) is positioned at the axle center of support (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910059235A CN101550826B (en) | 2009-05-07 | 2009-05-07 | Machinery wireless well deviation measurement instrument while drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910059235A CN101550826B (en) | 2009-05-07 | 2009-05-07 | Machinery wireless well deviation measurement instrument while drilling |
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| CN101550826A CN101550826A (en) | 2009-10-07 |
| CN101550826B true CN101550826B (en) | 2012-10-17 |
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| CN200910059235A Expired - Fee Related CN101550826B (en) | 2009-05-07 | 2009-05-07 | Machinery wireless well deviation measurement instrument while drilling |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337882B (en) * | 2011-10-27 | 2014-09-24 | 中国石油集团西部钻探工程有限公司 | Wireless while-drilling compound multipoint instrument |
| CN109595018A (en) * | 2019-02-21 | 2019-04-09 | 安徽新园矿山设备制造有限责任公司 | A kind of anti-breaking bar protective device of the pneumatic roof bolter suitable for coal mine |
| CN110005401A (en) * | 2019-05-21 | 2019-07-12 | 自贡中兴耐磨新材料有限公司 | A kind of mechanical inclinometer based on circulation of drilling fluid |
| CN110685672B (en) * | 2019-09-17 | 2023-08-11 | 中国地质科学院勘探技术研究所 | Deep well high-temperature high-pressure temperature measurement inclinometer |
| CN113006680B (en) * | 2021-03-19 | 2022-10-28 | 成都欧维恩博石油科技有限公司 | Low-pressure-loss torsion impact drilling tool and rock breaking method |
| CN113756788B (en) * | 2021-10-18 | 2022-08-02 | 中国地质大学（北京） | Mechanical type is along with boring well deviation measuring apparatu |
| CN114810039B (en) * | 2022-05-12 | 2022-11-25 | 中国地质大学（北京） | Mud pulse signal generating device and inclinometer |
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