CN2793324Y - Gamma drilling measuring instrument for declination and location of well - Google Patents
Gamma drilling measuring instrument for declination and location of well Download PDFInfo
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- CN2793324Y CN2793324Y CN 200520082160 CN200520082160U CN2793324Y CN 2793324 Y CN2793324 Y CN 2793324Y CN 200520082160 CN200520082160 CN 200520082160 CN 200520082160 U CN200520082160 U CN 200520082160U CN 2793324 Y CN2793324 Y CN 2793324Y
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- gamma
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Abstract
The utility model relates to a following drilling meter for hole deflection and orientation gamma, which comprises a drill collar, two V-shaped grooves, a metal shielding layer, two gamma sensors, a triaxial acceleration sensor, a signal processing circuit module, a high pressure seal cover plate, a flow guide channel of drilling fluid, a connector of an upper slide ring, a connector of a lower slide ring and a conducting wire hole. The measuring function of the orientation gamma and the measuring function of the hole deflection are integrated in one short piece by the meter, therefore in the process of drilling, the lithology of strata can be measured at real time and the lithologic characteristics of upper and lower interfaces can also be distinguished. Upper part cover layers of reservoirs can be effectively discovered, and the optimum time of entering the reservoirs of oil and gas can be trapped. When the lithologic characteristics of the upper and the lower interfaces are distinguished, the hole deflection and the states of drilling tools at the point can be measured at real time in a zero-lag mode simultaneously. The utility model is favorable for adjusting the tracks of bore holes in time according to geologic information and controlling the optimum positions of drilling tools penetrating the oil reservoirs, and the utility model is suitable for conducting geological guide in petroleum engineering.
Description
Technical field:
The utility model relates to a kind of wireless drilling measurer that is used for geosteering in petroleum drilling engineering.
Background technology:
At present, in the measurement while drilling field of drilling well industry, known formation lithology recognition methods is the different natural radioactivity intensity that had according to the Different Strata lithology, measures the gamma ray that formation rock radiated and determines formation lithology.Gamma ray log method and instrument have been widely used in the wireline logging engineering.Aspect the measuring principle of formation lithology, the measurement while drilling method is with wireline logging method unanimity, but at apparatus structure, noise processed, signal extraction and implementer's face very big difference arranged, and measurement while-drilling instrument is subjected to the influence of drill collar very big.Lithology while drilling is discerned the measurement pipe nipple that applied drill-following natural gamma measuring instrument is made up of gamma survey module and resistance to compression tube at present.The gamma survey module is made up of gamma sensor and signal processing circuit, be installed in the resistance to compression tube, and link together with other measurement while-drilling instrument (generally including orientation survey pipe nipple, porosity measurement pipe nipple, density measure pipe nipple, resistivity measurement pipe nipple etc.), be installed in drill collar inside, form the well logging during instrument.Drill-following natural gamma measuring instrument pipe nipple is centered at the drill collar central axis by the centralizer of instrument, is parallel to borehole axis.Gamma sensor generally adopts geiger-maitreya tube or scintillation counter, and the gamma ray that it will incide sensor is converted to electronic pulse signal, and after handling, counted number of pulses is promptly represented the natural gamma radioactivity intensity of institute's geodetic layer, and unit is API.
This drill-following natural gamma measuring instrument only is equipped with a gamma sensor, and occupy the drill collar central axis, and promptly instrument is parallel to borehole axis.There is following shortcoming in this drill-following natural gamma measuring instrument:
The measurement response of gamma sensor is to be the coefficient result of natural gamma rays on interior all stratum of spheric region (radius generally is 20 centimetres～30 centimetres) at center with the sensor loca.If in the investigative range is homogeneous formation, measuring response is the natural gamma radioactivity on this single stratum; If in the investigative range is inhomogeneous formation, measuring response then is the radioactive summation of Different Strata.Measure for drill-following natural gamma, importantly not only can in time discern formation lithology, also should differentiate the interface of different lithology, and because the measurement result of this drill-following natural gamma measuring instrument is the radioactive average response in stratum, therefore the differentiation life period to the stratum variation of lithological lags behind, can not in time differentiate lithologic interface feature and effectively the top cap rock of discovery reservoir up and down, miss the best opportunity that enters the reservoir.Simultaneously because gamma sensor is positioned at the well center, in its investigative range, comprise drilling fluid, drill collar, annular space and stratum, therefore the resolution ratio of gamma survey is subjected to the influence of drilling fluid, drill collar and annular space, the depth of stratum that actual detection arrives is more shallow, also is unfavorable in time differentiating the variation of formation lithology.
In addition, because at oil sheet or have when boring high angle hole or horizontal well in the oil reservoir of complex fold, tomography, require the directional survey sensor as far as possible near lithology identification sensor (natural gamma sensor), so that in time obtain the well inclination angle (hole deviation) of relevant formation lithology information and this point, determine the position of reservoir, according to the geological information Controlling Borehole Trajectory, realize geosteering.But at present the drill-following natural gamma measuring instrument is installed in other well logging during instrument pipe nipple usually (as with boring resistivity, with boring density, with measurement pipe nipples such as brill neutrons) back, form the well logging during instrument, because the access of orientation survey pipe nipple bottom geologic parameter measuring apparatus, whole well logging during instrument length is increased, the distance of directional survey point and gamma survey point is (generally greater than 3 meters) far away, therefore in the identification lithologic character, can not in time obtain the hole deviation of this point, cause hole trajectory control to lag behind, can not in time catch reservoir surface cover information, lose the best opportunity that enters oil-gas Layer.
The utility model content:
The purpose of this utility model is for a kind of hole deviation and orientation gamma steering tool are provided, compared with prior art, this instrument not only can be measured formation lithology in real time in drilling process, lithologic interface feature up and down can also be differentiated, the hole deviation of this point can also be in time, the nothing hysteresis measured simultaneously.
Instrument described in the utility model comprises drill collar, two V-shaped grooves, metal screen layer, two gamma sensor, 3-axis acceleration sensor, signal processing circuit module, high pressure sealing cover plate, drilling fluid flow-guiding channels, goes up sliding ring connector, sliding ring connector, wire guide down.
Feature of the present utility model is: the two opposite side surfaces at drill collar has two V-shaped grooves, be inlaid with metal screen layer on the V-shaped groove surface, in a V-shaped groove gamma sensor and 3-axis acceleration sensor are installed therein, a gamma sensor and signal processing circuit module are installed in another V-shaped groove, the high pressure sealing cover plate is pressed in the outward flange of two V-shaped grooves, the screw thread root of drill collar is inlayed sliding ring connector and following sliding ring connector respectively, and is provided with wire guide and leads to two V-shaped grooves.The signal processing circuit module amplifies shaping by analog switch, gamma signal and discriminator circuit, hole deviation signal amplification filtering treatment circuit, drilling tool state distinguishing circuit, analog to digital conversion circuit, microprocessor, power control circuit, memory, modem, bus isolated drive circuit and high-voltage power circuit are formed, these circuit are installed on the same circuit board, are connected on the power supply by lead in the wire guide and last sliding ring connector.At least comprise a drilling fluid runner in the drill collar.
The beneficial effect that nearly drill bit directional survey described in the utility model and orientation gamma survey instrument have is, because gamma sensor is installed in the V-shaped groove that is inlaid with the gamma ray metal screen layer, and each gamma sensor receives only the gamma ray on stratum in the sector region corresponding with it, therefore not only can in drilling process, measure formation lithology in real time, can also differentiate the upper and lower interface lithologic character, effectively find the top cap rock of reservoir, catch the best opportunity that enters reservoir.In addition, because deviation sensor and gamma sensor are installed in the same measurement pipe nipple, therefore when differentiating the upper and lower interface lithologic character, can also not have in real time lags behind measures the hole deviation and the drilling tool state of this point, help in time adjusting well track according to geological information, the control drilling tool runs in the guide the oil reservoir optimum position, can realize geosteering effectively.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings:
Fig. 1 represents the axial section of " hole deviation and orientation gamma steering tool ";
Fig. 2 represents the radial section figure of " hole deviation and orientation gamma steering tool ";
Fig. 3 represents the signal processing circuit module frame chart of " hole deviation and orientation gamma steering tool ".
1, drill collar 2, wire guide 3, V-shaped groove
4, high pressure sealing cover plate 5,3-axis acceleration sensor 6, gamma sensor
7, metal screen layer 8, last sliding ring connector 9, mud flow-guiding channel
10, signal processing circuit module 11, gamma sensor 12, V-shaped groove
13, sliding ring connector 14, analog switch 15, gamma signal amplify shaping and discriminator circuit down
16, analog switch 17, hole deviation signal amplification filtering treatment circuit 18, drilling tool state distinguishing circuit
19, analog to digital conversion circuit 20, microprocessor 21, memory
22, modem 23, bus isolated drive circuit 24, power control circuit
25, high-voltage power circuit
The specific embodiment:
Now, the utility model is further described in conjunction with Figure of description 1,2 and 3.
Fig. 1 represents the axial section of instrument.Drill collar 1 is positioned at after drill bit or the deflecting tool as the installation skeleton of instrument and the part of down-hole equipment.Open a V-shaped groove 3 in any one side of drill collar 1,, open a V-shaped groove 12, as the low limit of the measurement of instrument in another relative with it 180 ° side as the measurement flash of instrument.V- shaped groove 3 and 12 surface are inlaid with metal screen layer 7,3-axis acceleration sensor 5 and gamma sensor 6 are installed in V-shaped groove 3, gamma sensor 11 and signal processing circuit module 10 are installed in V-shaped groove 12, and high pressure sealing cover plate 4 is pressed in V- shaped groove 3 and 12 outward flanges.Inlay sliding ring connector 8 and following sliding ring connector 13 respectively at the screw thread root of drill collar 1, and be provided with wire guide 2 and lead to V-shaped groove 3 and 12. Gamma sensor 6 and 11 is measured the natural gamma radioactivity intensity on stratum, 3-axis acceleration sensor 5 is measured the acceleration of gravity of three direction in spaces, its output signal is handled by signal processing circuit module 10, obtains formation lithology information, hole deviation data and the drilling tool state of survey mark simultaneously.The used power supply of 3-axis acceleration sensor 5, gamma sensor 6 and 11, signal processing circuit module 10 is provided by external connection battery by the lead in the wire guide 2 and last sliding ring connector 8, and the measuring-signal after signal processing circuit module 10 is handled is by the lead in the wire guide 2, upward sliding ring connector 8 and following sliding ring connector 13 are transferred to other measurement while-drilling instrument.
Fig. 2 represents the radial section figure of instrument.Drill collar 1 comprises a drilling fluid runner 9 at least, and the water conservancy diversion drilling fluid is from ground to the drill bit.Drilling fluid runner 9 is a sprue in the upper and lower of drill collar 1, is divided into the less runner of two or more diameters at V- shaped groove 3 and 12 positions.This structure can satisfy the requirement of strength of apparatus structure, can satisfy again drilling engineering required the mud displacement requirement.As another kind of runner form, drilling fluid runner 9 also can only include a sprue in drill collar 1.
The metal screen layer 7 that inlay on V-shaped groove 3 surfaces has stronger absorption shielding action for gamma ray, the absorption shielding that the gamma ray on stratum is subjected to metal screen layer 7 at two sides and the back side of V-shaped groove 3, can't incide gamma sensor 6, the gamma ray that gamma sensor 6 receives comes from V-shaped groove 3 pairing sector region stratum, and the measurement response of gamma sensor 6 focuses on stratum in the V-shaped groove 3 pairing sector regions.In like manner, the measurement of gamma sensor 11 response focuses on stratum in the V-shaped groove 12 pairing sector regions.This gamma survey response that has a directionality, rotating speed and the position of tool-face when rotating when the drilling tool that provides in conjunction with 3-axis acceleration sensor 5 rotates are used to differentiate the upper and lower interface lithologic character on stratum.
Fig. 3 represents the signal processing circuit module frame chart of instrument.Gamma sensor 6 and 11 receives the direction gamma ray in the stratum, change into the signal of telecommunication, deliver to the analog switch 14 that is subjected to microprocessor 20 controls, after amplification shaping of gamma signal and discriminator circuit 15 processing, become the calibration pulse signal and deliver to microprocessor 20 processing.The analog switch 16 that X, the Y that 3-axis acceleration sensor 5 produces, Z three tunnel normal acceleration signals are controlled by microprocessor 20, after 17 processing of hole deviation signal amplification filtering treatment circuit, become data signal by analog to digital conversion circuit 19, carry out data acquisition by microprocessor 20.Simultaneously, deliver to drilling tool state distinguishing circuit 18 through the signal after 17 processing of hole deviation signal amplification filtering treatment circuit, signal is carried out shaping processing, pulse edge seizure, obtain phase sequence, pulse width, the pulse duty factor of signal, the parameters such as cycle of pulse phase sequence, microprocessor 20 creeps into the swing state of state, drilling tool, the rotary state of drilling tool according to the slip of these parameters identification drilling tools, and rotating speed and the position of tool-face when rotating when calculating drilling tool and rotating.
The exchanges data of hole deviation and orientation gamma steering tool and other measurement while-drilling instrument is finished by modem 22 and bus isolated drive circuit 23.Modem 22 is modulated into the FSK form to the binary data that microprocessor 20 transmits, and after being driven by bus isolated drive circuit 23, delivers to other measurement while-drilling instrument instrument by single core bus, utilizes mud-pressure-pulse telemetry system to send to ground.The data of Other Instruments and order are arrived modem 22 by single core bus transfer after overdriving, the signal of FSK form is demodulated into the binary format signal delivers to microprocessor 20 processing.
For saving the down-hole electric energy, microprocessor 20 is according to different work schedule control power control circuits 24, and output multichannel controlled source is supplied with sensor and treatment circuit.Wherein, high-voltage power circuit 25 conversion go out gamma sensor 6 and 11 required high voltage sourcies.
Claims (3)
1, a kind of hole deviation and orientation gamma steering tool, this instrument comprises: drill collar (1), V-shaped groove (3) and (12), metal screen layer (7), gamma sensor (6) and (11), 3-axis acceleration sensor (5), signal processing circuit module (10), high pressure sealing cover plate (4), drilling fluid flow-guiding channel (9), last sliding ring connector (8), following sliding ring connector (13), wire guide (2), it is characterized in that having two V-shaped grooves (3) and (12) in the two opposite side surfaces of drill collar (1), be inlaid with metal screen layer (7) at V-shaped groove (3) and (12) surface, 3-axis acceleration sensor (5) and gamma sensor (6) are installed in V-shaped groove (3), signal processing circuit module (10) and gamma sensor (11) are installed in V-shaped groove (12), high pressure sealing cover plate (4) is pressed in V-shaped groove (3) and (12) outward flange, inlay sliding ring connector (8) and following sliding ring connector (13) respectively at the screw thread root of drill collar (1), and be provided with wire guide (2) and lead to V-shaped groove (3) and (12).
2, hole deviation according to claim 1 and orientation gamma steering tool, it is characterized in that signal processing circuit module (10) comprising: analog switch (14) and (16), the gamma signal amplifies shaping and discriminator circuit (15), hole deviation signal amplification filtering treatment circuit (17), drilling tool state distinguishing circuit (18), analog to digital conversion circuit (19), microprocessor (20), memory (21), modem (22), bus isolated drive circuit (23), power control circuit (24) and high-voltage power circuit (25), these circuit are installed on the same circuit board, are connected on the power supply by lead and last sliding ring connector (8) in the wire guide (2).
3, hole deviation according to claim 1 and orientation gamma steering tool is characterized in that comprising at least in the drill collar (1) a drilling fluid runner (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520082160 CN2793324Y (en) | 2005-04-14 | 2005-04-14 | Gamma drilling measuring instrument for declination and location of well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520082160 CN2793324Y (en) | 2005-04-14 | 2005-04-14 | Gamma drilling measuring instrument for declination and location of well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2793324Y true CN2793324Y (en) | 2006-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520082160 Expired - Fee Related CN2793324Y (en) | 2005-04-14 | 2005-04-14 | Gamma drilling measuring instrument for declination and location of well |
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| CN (1) | CN2793324Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676874B (en) * | 2005-04-14 | 2010-12-08 | 中国石化集团胜利石油管理局钻井工艺研究院 | Well deflection and position gamma measuring nistrument during drilling |
| CN102037212A (en) * | 2008-05-23 | 2011-04-27 | 普拉德研究及开发股份有限公司 | Drilling wells in compartmentalized reservoirs |
| CN102400678A (en) * | 2011-12-01 | 2012-04-04 | 中天启明石油技术有限公司 | Data acquisition and transmission device for near-bit measuring instrument |
| CN101235716B (en) * | 2008-02-22 | 2012-07-04 | 中国海洋石油总公司 | Prealarming method and method for avoiding oil gas well drilling neighbouring wellbore collision |
| CN101476463B (en) * | 2009-01-23 | 2012-07-25 | 丛山 | Drill-following natural gamma geosteering method for horizontal well |
| CN104500052A (en) * | 2014-11-27 | 2015-04-08 | 中国石油天然气集团公司 | Compensation density logging-while-drilling instrument |
| CN106285632A (en) * | 2016-09-30 | 2017-01-04 | 上海神开石油设备有限公司 | Orientation gamma measuring apparatus and acquisition method |
| CN106640052A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Embedded type while-drilling downhole working condition measuring device |
| CN107807709A (en) * | 2016-09-09 | 2018-03-16 | 中国石油化工股份有限公司 | A kind of nearly drill bit instrument power source management system and method for managing power supply |
| CN111197481A (en) * | 2018-10-31 | 2020-05-26 | 中石化石油工程技术服务有限公司 | Bearing drilling tool of measurement and control instrument while drilling |
| CN112627812A (en) * | 2020-11-30 | 2021-04-09 | 中海石油（中国）有限公司天津分公司 | Underground blocking layer short section for measuring lithology and drilling assembly |
| CN113756788A (en) * | 2021-10-18 | 2021-12-07 | 中国地质大学（北京） | Mechanical type is along with boring well deviation measuring apparatu |
-
2005
- 2005-04-14 CN CN 200520082160 patent/CN2793324Y/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1676874B (en) * | 2005-04-14 | 2010-12-08 | 中国石化集团胜利石油管理局钻井工艺研究院 | Well deflection and position gamma measuring nistrument during drilling |
| CN101235716B (en) * | 2008-02-22 | 2012-07-04 | 中国海洋石油总公司 | Prealarming method and method for avoiding oil gas well drilling neighbouring wellbore collision |
| US9279323B2 (en) | 2008-05-23 | 2016-03-08 | Schlumberger Technology Corporation | Drilling wells in compartmentalized reservoirs |
| CN102037212A (en) * | 2008-05-23 | 2011-04-27 | 普拉德研究及开发股份有限公司 | Drilling wells in compartmentalized reservoirs |
| US9664032B2 (en) | 2008-05-23 | 2017-05-30 | Schlumberger Technology Corporation | Drilling wells in compartmentalized reservoirs |
| US8839858B2 (en) | 2008-05-23 | 2014-09-23 | Schlumberger Technology Corporation | Drilling wells in compartmentalized reservoirs |
| CN102037212B (en) * | 2008-05-23 | 2014-10-29 | 普拉德研究及开发股份有限公司 | Drilling wells in compartmentalized reservoirs |
| CN101476463B (en) * | 2009-01-23 | 2012-07-25 | 丛山 | Drill-following natural gamma geosteering method for horizontal well |
| CN102400678A (en) * | 2011-12-01 | 2012-04-04 | 中天启明石油技术有限公司 | Data acquisition and transmission device for near-bit measuring instrument |
| CN104500052A (en) * | 2014-11-27 | 2015-04-08 | 中国石油天然气集团公司 | Compensation density logging-while-drilling instrument |
| CN106640052A (en) * | 2015-10-30 | 2017-05-10 | 中石化石油工程技术服务有限公司 | Embedded type while-drilling downhole working condition measuring device |
| CN107807709A (en) * | 2016-09-09 | 2018-03-16 | 中国石油化工股份有限公司 | A kind of nearly drill bit instrument power source management system and method for managing power supply |
| CN106285632A (en) * | 2016-09-30 | 2017-01-04 | 上海神开石油设备有限公司 | Orientation gamma measuring apparatus and acquisition method |
| CN106285632B (en) * | 2016-09-30 | 2023-07-18 | 上海神开石油测控技术有限公司 | Azimuth gamma measuring device and acquisition method |
| CN111197481A (en) * | 2018-10-31 | 2020-05-26 | 中石化石油工程技术服务有限公司 | Bearing drilling tool of measurement and control instrument while drilling |
| CN112627812A (en) * | 2020-11-30 | 2021-04-09 | 中海石油（中国）有限公司天津分公司 | Underground blocking layer short section for measuring lithology and drilling assembly |
| CN113756788A (en) * | 2021-10-18 | 2021-12-07 | 中国地质大学（北京） | Mechanical type is along with boring well deviation measuring apparatu |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060705 Termination date: 20100414 |