CN101781984A - Drilling strata pressure test method and device thereof - Google Patents
Drilling strata pressure test method and device thereof Download PDFInfo
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- CN101781984A CN101781984A CN200910002450A CN200910002450A CN101781984A CN 101781984 A CN101781984 A CN 101781984A CN 200910002450 A CN200910002450 A CN 200910002450A CN 200910002450 A CN200910002450 A CN 200910002450A CN 101781984 A CN101781984 A CN 101781984A
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Abstract
The invention relates to a drilling strata pressure test device and a method thereof for the petroleum drilling. The method comprises the steps of receiving of ground control order, annular packing, strata pressure test, data uploading and ground data processing; and the device consists of a ground control order receiving unit which is installed on the bottom part of a drill column, an annular packing unit, a strata pressure test unit, a data uploading unit, a power supply unit and a ground data processing unit; and the main parts of the device include an outer barrel (1) which is installed on the bottom part of the drill column, a packer drive device (8), a packing rubber cylinder (9), a control module (4), a pulse generator (2), a battery cylinder (6), a suction pump cabin (10), a drilling-tool inner-runner blocker (12) and a support seat (13). The dynamic collection of the underground strata pressure data can be realized, and the strata pressure data can be instantly transmitted to the ground without going in, so the working procedures can be saved.
Description
Technical field
The present invention relates to the oilfield drilling testing tool, particularly a kind of with boring the formation pressure test device and method.
Background technology
Strata pressure is meant that the pressure that acts on the formation pore inner fluid (oil, gas, water) strata pressure, is also referred to as formation pore pressure.Formation pressure detection and prediction; it is an important research field of oil-gas exploration and exploitation always; particularly drilling well on super-pressure area and ocean; because it is for ensureing drilling safety, improve drilling efficiency, reduce drilling cost, and in time take the safeguard measure etc. of oil-gas Layer all to have important directive significance.
In drilling process, have only accurate grasp strata pressure could effectively determine casing programme, drilling fluid density and wellhead assembly that is adopted and wellbore construction measure to have developed many prediction of formation pressure technology both at home and abroad in succession for this reason.In the past the pressure prediction that uses of petroleum industry comprise bore before pressure prediction, analyze with prediction and bore back pressure and analyze three phases with the pressure of the drill power.(1) before the drilling well, adopt seismic wave method, interval transit time prediction to detect formation pore pressure (formation interval velocity, acoustic logging curve, VSP log that seismic data extracts); (2) in the drilling well, adopt penetration rate method, dc index method (situ of drilling well data, test and oil test data, data such as leakage, overflow, oil gas water enchroachment (invasion)), shale density method; (3) after the completion, adopt density log, acoustic travel time logging, methods such as formation testing test.
Rely on the prediction of formation pressure technology to be difficult to realize accurate prediction, existing calculate the formation pore pressure model method may be in different areas, different geology and depositional environment and very big variation is arranged, there is not which kind of pore pressure pattern can be in unalterable being used of any one location, comprehensively the result of the whole bag of tricks is also compared, and could improve the order of accuarcy of prediction.
Summary of the invention
Provide a kind of is provided directly carries out the measurement of strata pressure interval of interest with method of boring formation pressure test and device, and measured data is sent to ground with pulse mode, be reduced to the strata pressure value by decoding, thereby avoided theoretical model and relied on ground parameter to calculate the error of being brought.
For achieving the above object, a kind of method with the brill formation pressure test provided by the invention mainly comprises Ground Control command reception, annular space packing, formation pressure test, data upload and five steps of ground data processing, and is specific as follows:
A. Ground Control command reception step: send control instruction by being interrupted the mud that pumps in the drill string to the shaft bottom by ground control system, the sensor assembly that is installed in the drill string bottom receives control instruction, send to the shaft bottom control module and judge, and send the packing signal by this control module;
B. annular space packing step: after the packer drive unit was received the packing signal, the packing rubber sleeve apart from the shaft bottom certain distance on the drill string began to expand, and finally is resisted against the borehole wall, finishes the annular space packing;
C. formation pressure test step: the control module control drilling tool inner flow passage block device in the formation pressure test unit cuts out drill string inner flow passage space, liquid in the suction pump storehouse suction packer lower seal space on the drill string, formation fluid is in inlet enters the suction pump storehouse, and be expelled to top from liquid outlet and do not seal annular space, termination of pumping, pressure recovers, and pressure sensor module is gathered the pressure test value;
D. data upload step: the pressure test value that sensor assembly obtains becomes data signal through the A/D module converts, sends to impulse controller and encodes, and by impulse generator data is uploaded to the ground data processing unit with pulse signal;
F. ground data treatment step: the pulse signal of uploading under the ground-pressure pick-up received well, through the GDHS decoding, be reduced to the strata pressure real time data, then formation pressure data is stored, shown.
After the formation pressure test step was finished, the shaft bottom control module was sent the deblocking signal, after the packer drive unit is received the deblocking signal, drove packing rubber sleeve and shrank, and finished the deblocking step, discharged drilling tool inner flow passage space simultaneously.In finishing the formation pressure test step process, need the formation pressure test data are preserved, treat that packer is separated to be honored as a queen to convert pulse signal again to and upload.
For guaranteeing the realization of said method, mainly form by Ground Control command reception unit, annular space packing unit, formation pressure test unit, data upload unit, power subsystem and ground data processing unit with boring the formation pressure test device;
A. Ground Control command reception unit is the sensor assembly that is installed in the drill string bottom, and this module mainly is made up of sensor unit, A/D module and microprocessor; Sensor unit receives the Ground Control instruction, becomes data signal and be sent to microprocessor to handle through the A/D module converts, makes judgement;
B. annular space packing unit is made up of packing drive unit, packing rubber sleeve, and the packing drive unit expands packing rubber sleeve, against the borehole wall, finishes the packing annular space; The packer drive unit is made up of hydraulic oil and pump;
C. the formation pressure test unit is made up of control module, acquisition module, pressure sensor, runner block device, suction pump storehouse; Control module control runner block device blocking-up drilling tool inner flow passage space, drilling tool inner flow passage block device is an one way valve, and the suction pump in control suction pump storehouse starts liquid in the suction seal cavity, fall to produce a pressure, then acquisition module controlled pressure sensor acquisition pressure delta data;
D. the data upload unit is made up of A/D module, impulse controller and impulse generator; The A/D module becomes data signal with the real-time pressure data transaction, is sent to impulse controller and encodes, and is uploaded to ground by impulse generator with pulse singaling;
E. the ground data processing unit is made up of sensor and process software module; Be installed in the pulse signal of uploading under the sensor received well on the standpipe, the real-time dynamic data that process software module receiving sensor provides, and data are decoded is reduced to the strata pressure value and stores and show;
F. power subsystem is made up of the battery tube; For stressor layer tester entirely provides the constant current electric energy.
Patent (the utility model title: a kind of shaft bottom data acquisition transmitting device that the bottom pressure harvester that the present invention relates to has been applied for by West Drilling Karamay Drilling Craft Research Institute, application number: disclose 2008200063778), belong to prior art.
Beneficial effect of the present invention: can carry out the dynamic acquisition of shaft bottom formation pressure data, and real-time Transmission need not to put brill to ground, the saving operation.
Description of drawings
Fig. 1 structural representation of the present invention;
Fig. 2 testing process schematic diagram of the present invention.
Specific embodiments
Be described further below in conjunction with accompanying drawing.
Device of the present invention mainly is made up of Ground Control command reception unit, annular space packing unit, formation pressure test unit, data upload unit, power subsystem and ground data processing unit as shown in accompanying drawing 1:
A. Ground Control command reception unit is the sensor assembly 16 that is installed in the drill string bottom, and this module mainly is made up of sensor unit, A/D module and microprocessor; Sensor unit receives the Ground Control instruction, becomes data signal and be sent to microprocessor to handle through the A/D module converts, makes judgement;
B. annular space packing unit is made up of packing drive unit 8, packing rubber sleeve 9, and packing drive unit 8 expands packing rubber sleeve, against the borehole wall, finishes the packing annular space; Drive unit 8 is made up of hydraulic oil and pump;
C. the formation pressure test unit is made up of control module 4, acquisition module, pressure sensor, runner block device 12, suction pump storehouse 10; Control module 4 control runner block devices 12 blocking-up drilling tool inner flow passage spaces, drilling tool inner flow passage block device 12 is an one way valve, and the suction pump in control suction pump storehouse 10 starts, liquid in the suction seal cavity, fall to produce a pressure, then acquisition module controlled pressure sensor acquisition pressure delta data;
D. the data upload unit is made up of A/D module, impulse controller and impulse generator; The A/D module becomes data signal with the real-time pressure data transaction, is sent to impulse controller and encodes, and is uploaded to ground by impulse generator with pulse singaling;
E. the ground data processing unit is made up of sensor and process software module; Be installed in the pulse signal of uploading under the sensor received well on the standpipe, the real-time dynamic data that process software module receiving sensor provides, and data are decoded is reduced to the strata pressure value and stores and show;
F. power subsystem is made up of the battery tube; For stressor layer tester entirely provides the constant current electric energy.
The concrete implementation step of the present invention is as follows: its device mainly is made up of the urceolus 1, packer drive unit 8, packing rubber sleeve 9, control module 4, impulse generator 2, battery tube 6, suction pump storehouse 10, drilling tool inner flow passage block device 12 and the supporting seat 13 that are installed in the drill string bottom, supporting seat 13 is positioned at above-mentioned parts bottom, and above-mentioned parts adopt successively and connect the recoil on supporting seat 13; Ground Control command reception unit is made up of the sensor assembly 16 that is installed in the tester bottom, A/D module and the microprocessor in the control module, sensor assembly receives the Ground Control instruction, become data signal to be sent to microprocessor through the A/D module converts and handle, and make judgement; Annular space packing unit is made up of packer drive unit 8 that is installed in urceolus 1 bottom and packing glue packing element 9, and drive unit 8 expands packing rubber sleeve, against the borehole wall 3, finishes the action of seat envelope, forms airtight annular space 14 with shaft bottom under the drill bit 15; The formation pressure test unit is made up of the suction pump in control module 4, acquisition module, pressure sensor, drilling tool inner flow passage block device 12, the suction pump storehouse 10; Control module 4 control runner block devices 12 blocking-up drilling tool inner flow passage spaces, the control suction pump starts, liquid in inlet 11 suction seal cavities 14, be expelled to the annular space 5 from liquid outlet 7, fall to produce a pressure, and wait for that a pressure recovers, the pressure sensor that acquisition module control is installed in the sensor assembly 16 is gathered pressure delta data around here; The data upload unit is made up of the A/D module, impulse controller and the impulse generator 2 that are installed in the control module 4; The A/D module becomes data signal with the real-time pressure data transaction of gathering, and is sent to impulse controller and encodes, and is uploaded to ground by impulse generator 2 with pulse singaling; Power subsystem is made up of battery tube 6, for device provides electric energy.
Claims (6)
1. one kind with boring the formation pressure test method, comprises that mainly Ground Control command reception, annular space packing, formation pressure test, data upload and ground data handle five steps, specific as follows:
A. Ground Control command reception step: send control instruction by being interrupted the mud that pumps in the drill string to the shaft bottom by ground control system, the sensor assembly (16) that is installed in the drill string bottom receives control instruction, send to shaft bottom control module (4) and judge, and send out the packing signal by this control module (4);
B. annular space packing step: after packer drive unit (8) was received the packing signal, the packing rubber sleeve (9) apart from the shaft bottom certain distance on the drill string began to expand, and finally is resisted against the borehole wall, finishes the annular space packing;
C. formation pressure test step: the control module control drilling tool inner flow passage block device (12) in the formation pressure test unit cuts out drill string inner flow passage space, liquid in suction packing rubber sleeve (9) the lower seal space, suction pump storehouse (10) (14) on the drill string, formation fluid is in inlet (11) enters suction pump storehouse (10), and be expelled to top from liquid outlet (7) and do not seal annular space, termination of pumping, pressure recovers, and pressure sensor module (16) is gathered the pressure test value;
D. data upload step: the pressure test value that sensor assembly (16) obtains becomes data signal through the A/D module converts, sends to impulse controller and encodes, and by impulse generator (2) data is uploaded to the ground data processing unit with pulse signal;
F. ground data treatment step: the pulse signal of uploading under the ground-pressure pick-up received well, through the GDHS decoding, be reduced to the strata pressure real time data, then formation pressure data is stored, shown.
2. according to claim 1 a kind of with boring the formation pressure test method, it is characterized in that: after the formation pressure test step is finished, send the deblocking signal, after packer drive unit (8) receives the deblocking signal by control module (4), drive packer (9) and shrink, finish the deblocking step.
3. according to claim 1 a kind of with boring the formation pressure test method, it is characterized in that: in finishing the formation pressure test step process, need the formation pressure test data are preserved, treat that packing rubber sleeve (9) is separated to be honored as a queen to convert pulse signal again to and upload.
4. described a kind of with boring the formation pressure test method for realizing claim 1, required mainly is made up of Ground Control command reception unit, annular space packing unit, formation pressure test unit, data upload unit, power subsystem and ground data processing unit with boring the formation pressure test device, it is characterized in that:
A. Ground Control command reception unit is the sensor assembly (16) that is installed in the drill string bottom, and this module mainly is made up of sensor unit, A/D module and microprocessor; Sensor unit receives the Ground Control instruction, becomes data signal and be sent to microprocessor to handle through the A/D module converts, makes judgement;
B. annular space packing unit is made up of packing drive unit (8), packing rubber sleeve (9), and the packing drive unit expands packing rubber sleeve, against the borehole wall, finishes the packing annular space;
C. the formation pressure test unit is made up of control module (4), acquisition module, pressure sensor, runner block device (12), suction pump storehouse (10); Control module (4) control runner block device (12) blocking-up drilling tool inner flow passage space, and the suction pump in the control suction pump storehouse (10) starts, the whole pressure process delta data of acquisition module controlled pressure sensor acquisition falls in liquid in the suction seal cavity to produce a pressure;
D. the data upload unit is made up of A/D module, impulse controller and impulse generator; The A/D module becomes data signal with the real-time pressure data transaction, is sent to impulse controller and encodes, and is uploaded to ground by impulse generator with pulse singaling;
E. the ground data processing unit is made up of sensor and process software module; Be installed in the pulse signal of uploading under the sensor received well on the standpipe, the real-time dynamic data that process software module receiving sensor provides, and data are decoded is reduced to the strata pressure value and stores and show;
F. power subsystem is made up of the battery tube; For stressor layer tester entirely provides the constant current electric energy.
5. according to claim 4 a kind of with boring the formation pressure test device, it is characterized in that: packer drive unit (8) is made up of hydraulic oil and pump.
6. according to claim 4 a kind of with boring the formation pressure test device, it is characterized in that: drilling tool inner flow passage block device (12) is an one way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910002450A CN101781984A (en) | 2009-01-16 | 2009-01-16 | Drilling strata pressure test method and device thereof |
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| CN200910002450A CN101781984A (en) | 2009-01-16 | 2009-01-16 | Drilling strata pressure test method and device thereof |
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| CN101781984A true CN101781984A (en) | 2010-07-21 |
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| CN200910002450A Pending CN101781984A (en) | 2009-01-16 | 2009-01-16 | Drilling strata pressure test method and device thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102808615A (en) * | 2011-06-01 | 2012-12-05 | 大庆石油管理局 | Electronic circuit testing equipment for formation pressure tester while drilling |
| CN102839969A (en) * | 2011-06-20 | 2012-12-26 | 中国石油化工集团公司 | Device for bit pressure/torque measurement while drilling in oil drilling |
| CN103244108A (en) * | 2013-06-05 | 2013-08-14 | 中国石油大学(华东) | Formation pressure determination method under condition of failure in wall shut-in during blowout |
| CN103906891A (en) * | 2011-03-24 | 2014-07-02 | 默林科技股份有限公司 | Sonde with integral pressure sensor and method |
| CN103982175A (en) * | 2014-05-29 | 2014-08-13 | 中国石油集团钻井工程技术研究院 | Whole-process annular pressure measuring method and device |
| CN104806192A (en) * | 2015-05-08 | 2015-07-29 | 中石化石油工程机械有限公司研究院 | Lifting valve eccentric type downhole blowout preventer |
| CN106150489A (en) * | 2016-07-26 | 2016-11-23 | 中石化石油工程技术服务有限公司 | A kind of Formation bearing pressure dynamic testing method and cementing method |
| CN112267876A (en) * | 2020-11-27 | 2021-01-26 | 西南石油大学 | Formation pressure measurement while drilling tool with double packer structures and testing method |
-
2009
- 2009-01-16 CN CN200910002450A patent/CN101781984A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906891A (en) * | 2011-03-24 | 2014-07-02 | 默林科技股份有限公司 | Sonde with integral pressure sensor and method |
| CN103906891B (en) * | 2011-03-24 | 2017-12-29 | 默林科技股份有限公司 | The detector and its correlation technique of pressure sensor with one |
| CN102808615A (en) * | 2011-06-01 | 2012-12-05 | 大庆石油管理局 | Electronic circuit testing equipment for formation pressure tester while drilling |
| CN102839969A (en) * | 2011-06-20 | 2012-12-26 | 中国石油化工集团公司 | Device for bit pressure/torque measurement while drilling in oil drilling |
| CN103244108A (en) * | 2013-06-05 | 2013-08-14 | 中国石油大学(华东) | Formation pressure determination method under condition of failure in wall shut-in during blowout |
| CN103244108B (en) * | 2013-06-05 | 2014-06-25 | 中国石油大学(华东) | Formation pressure determination method under condition of failure in wall shut-in during blowout |
| CN103982175A (en) * | 2014-05-29 | 2014-08-13 | 中国石油集团钻井工程技术研究院 | Whole-process annular pressure measuring method and device |
| CN104806192A (en) * | 2015-05-08 | 2015-07-29 | 中石化石油工程机械有限公司研究院 | Lifting valve eccentric type downhole blowout preventer |
| CN106150489A (en) * | 2016-07-26 | 2016-11-23 | 中石化石油工程技术服务有限公司 | A kind of Formation bearing pressure dynamic testing method and cementing method |
| CN112267876A (en) * | 2020-11-27 | 2021-01-26 | 西南石油大学 | Formation pressure measurement while drilling tool with double packer structures and testing method |
| CN112267876B (en) * | 2020-11-27 | 2022-04-05 | 西南石油大学 | Formation pressure measurement while drilling tool with double packer structures and testing method |
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Open date: 20100721 |