CN105332687A - Method and device for setting target wellhead pressures in control-pressure well drilling control systems - Google Patents
Method and device for setting target wellhead pressures in control-pressure well drilling control systems Download PDFInfo
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- CN105332687A CN105332687A CN201410382330.1A CN201410382330A CN105332687A CN 105332687 A CN105332687 A CN 105332687A CN 201410382330 A CN201410382330 A CN 201410382330A CN 105332687 A CN105332687 A CN 105332687A
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- 238000005553 drilling Methods 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims description 34
- 238000004364 calculation method Methods 0.000 claims description 19
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 11
- 238000013479 data entry Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 3
- 238000004088 simulation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Abstract
The invention discloses a method and a device for setting target wellhead pressures in control-pressure well drilling control systems. The method includes storing data of PWD while-drilling pressure measuring tools, control-pressure well drilling parameters acquired by PLCs (programmable logic controllers) in real time and various parameters of input systems of control systems of industrial personal computers into databases of the control-pressure well drilling control systems; setting ranges of PWD pressure data which participate in computation, computing average pressures by a plurality of selected PWD data to obtain a result P1, computing target wellhead pressures according to a formula of target wellhead pressures=set target bottom hole pressures-pressures of mud fluid columns below drill bits-P1+current wellhead pressures, setting the precision of the target wellhead pressures, keeping the original pressures if the target wellhead pressures are within difference value ranges, and utilizing the currently computed target wellhead pressures as the target wellhead pressures if the target wellhead pressures exceed the difference value ranges; enabling the industrial personal computers to transmit instructions to control systems of the PLCs to adjust the opening of throttle valves until actual wellhead pressures are close to the target wellhead pressures. The ranges of the PWD pressure data are higher than pressures of mud fluid columns above the drill bits and are lower than sums of pressures of fluid columns at the drill bits, pressure loss of annular spaces above the drill bits and wellhead pressures. The method and the device have the advantages that the target pressures can be stably and accurately set, and the control systems are easy to control.
Description
Technical field
The present invention relates to a kind of method to set up and device of well head goal pressure, the method to set up of well head goal pressure and device in espespecially a kind of controlled pressure drilling control system.
Background technology
In controlled pressure drilling and under balance pressure drilling, the control of bottom pressure has been the key of drillng operation, and steady, the accurate setting of well head goal pressure is the basis of control well mouth pressure, is also to realize bottom pressure to stablize and the guarantee accurately controlled.
The method to set up of current well head goal pressure has a variety of, various different control method also has and different arranges method, as the well head pressure computing method etc. of micrometeor control methods, simulation well bottom pressure computing method, meticulous pressure control, first two method is all do not have PWD in DHA with brill pressure measuring tool, micrometeor comparatively arranges well head goal pressure by importing and exporting flow-rate ratio, simulation bottom-hole pressure arranges well head pressure by analog computation bottom pressure, and above-mentioned two kinds of methods all cannot realize accurately bottom pressure and control.The well head goal pressure computing method of existing meticulous pressure control is that can calculate more accurately in drilling well or shaft bottom circulation time, but drill bit is not when shaft bottom, the setting of well head goal pressure is just inaccurate based on PWD with brill pressure measuring tool.
Summary of the invention
The object of the present invention is to provide method to set up and the device of well head goal pressure in a kind of controlled pressure drilling control system, it can solve drill bit and arrange jump, not steady in pit shaft any degree of depth well head goal pressure, well head pressure is difficult to control or control to be forbidden, cause bottom hole pressure surge large, unstable, the object of meticulous controlled pressure drilling can not be implemented, simultaneously, choke valve is caused to move frequently, serious wear, control system overload, is easy to many unfavorable factors such as damage.
To achieve these goals, technical solution of the present invention is: the method to set up of well head goal pressure in a kind of controlled pressure drilling control system, it comprises the steps:
(1) first by PWD with bore pressure measuring tool data, PLC Real-time Collection controlled pressure drilling parameter and Industrial Personal Computer (IPC) control system with the various parameters of input system input stored in the database of controlled pressure drilling control system;
(2) after, scope is arranged to the PWD pressure data participating in calculating, undesirable, can not as the data calculated, minimum pressure values can not lower than the head of liquid of mud, maximum pressure value can not be greater than the annular pressure lost+well head pressure of more than bit location head of liquid+drill bit, and select multiple PWD to be averaged calculation of pressure, result is P1, well head goal pressure calculates, and its formula is as follows:
Mud fluid column pressure-P1+ well head pressure at that time under well head goal pressure=shaft bottom Offered target pressure-drill bit, setting well head goal pressure precision, namely the well head goal pressure calculated and the positive and negative difference range of real well mouth pressure, if in difference range, keep original well head goal pressure constant, if gone beyond the scope, be that well head goal pressure is arranged by the current well head goal pressure calculated;
(3) Industrial Personal Computer (IPC) issues instructions to PLC control system according to target well head pressure value, carrys out switching throttling valve opening by PLC logic control system, until real well mouth pressure is close to well head target pressure value.
The method to set up of well head goal pressure in controlled pressure drilling control system of the present invention, in wherein said step (1), PWD is with brill pressure measuring tool data: with brill pressure measuring tool, measured bottom pressure is passed to ground decode system by the pulse signal of MWD instrument by PWD, be transferred to managed pressure drilling system again after being reduced by PWD pressure on the number, the database entering controlled pressure drilling control system is preserved.
The method to set up of well head goal pressure in controlled pressure drilling control system of the present invention, wherein said MWD instrument computer data acquisition the pressure of the drill, well depth, well vertical depth, bit location, in real time PWD data, download PWD data, hook height, hook weigh, in real time PWD temperature, download PWD temperature data are by the lane database of data line transfer to the controlled pressure drilling control system of Industrial Personal Computer (IPC).
The method to set up of well head goal pressure in controlled pressure drilling control system of the present invention, the parameter of PLC Real-time Collection controlled pressure drilling in wherein said step (1), these parameters comprise various pressure, pumpage, rate of discharge, hook height, well depth and well vertical depth, bit depth, pond volume, throttle valve opening.
The method to set up of well head goal pressure in controlled pressure drilling control system of the present invention, in wherein said step (1) Industrial Personal Computer (IPC) control system with input system input parameter comprises casing programme, drilling assembly, mud property and parameter, shaft bottom arranges pressure, set PWD data participates in computer capacity, sets and participate in mean P WD pressure number and well head goal pressure accuracy rating value.
The method to set up of well head goal pressure in controlled pressure drilling control system of the present invention, each data recorded in wherein said step (1) are extracted by the lane database of data presentation system from Industrial Personal Computer (IPC), and display on a display screen.
The method to set up of well head goal pressure in controlled pressure drilling control system of the present invention, in wherein said step (2), the general digital average pressures of participating in of 3 to 9 PWD of selecting calculate.
A setting device for well head goal pressure in controlled pressure drilling control system, comprising:
Plc data acquisition module: image data information transmission is to the database of Industrial Personal Computer (IPC);
PWD/MWD instrument computer: by the data information transfer of measurement to the database of Industrial Personal Computer (IPC);
Industrial Personal Computer (IPC): receive the data message of plc data acquisition module and the input of PWD/MWD instrument computer stored in database, by the data message of the data entry system of inside stored in database, and all data messages that database receives are fed back to inner numerical monitor, figure display and the setting of seletion calculation comparison decision, arranged by seletion calculation comparison decision and data message is fed back to PLC executive system;
PLC executive system: the instruction that reception Industrial Personal Computer (IPC) sends also performs.
The setting device of well head goal pressure in controlled pressure drilling control system of the present invention, wherein said plc data acquisition module, PWD/MWD tool computer are respectively by the DataBase combining of netting twine and Industrial Personal Computer (IPC), described seletion calculation comparison decision is arranged and is connected by netting twine with PLC executive system, and the database of described Industrial Personal Computer (IPC) is shown with the numerical monitor of Industrial Personal Computer (IPC), figure respectively by data wire and seletion calculation comparison decision arranges and is connected.
The setting device of well head goal pressure in controlled pressure drilling control system of the present invention, each slurry tank liquid level that the data of wherein said plc data acquisition module collection comprise drilling fluid outlet temperature, drill-in fluid rate of discharge, drilling mud pumpage, standpipe pressure, swivel control head pressure, casing pressure, well head pressure, throttling downstream pressure and recorded by four liquid level sensors.
The setting device of well head goal pressure in controlled pressure drilling control system of the present invention, the data that wherein said PWD/MWD instrument computer is measured comprise the pressure of the drill, well depth, well vertical depth, bit location, the real-time PWD pressure data recorded by liquid level sensor, the download PWD pressure data recorded by liquid level sensor, hook height, hook weigh, in real time PWD well temperature, download PWD bottom hole temperature (BHT).
The setting device of well head goal pressure in controlled pressure drilling control system of the present invention, the data of the data entry system of wherein said Industrial Personal Computer (IPC) inside comprise the cylinder sleeve of drilling pump size 3 recorded by liquid level sensor, the drilling liquid parameter recorded by liquid level sensor, the casing programme recorded by liquid level sensor and size, the structure of downhole assembly recorded by liquid level sensor and size, arrange bottom pressure/equal yield density, well head goal pressure.
After adopting such scheme, the present invention is by using the method to set up of well head goal pressure in above-mentioned controlled pressure drilling control system, can arrange steadily by realize target pressure, accurately, control system is easy to control, make bottom pressure level and smooth, stable, accurate equally, really realize the object of meticulous controlled pressure drilling.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the setting device of well head goal pressure in controlled pressure drilling control system of the present invention;
Fig. 2 is embodiments of the invention structural representations.
Symbol description:
Plc data acquisition module-1; PWD/MWD instrument computer-2;
Industrial Personal Computer (IPC)-3; PLC executive system-4;
Database-5; The database storage-6 of Industrial Personal Computer (IPC);
Digital display system-7; Graphic display system-8;
Seletion calculation comparison decision arranges-9; Vertical pressure sensor-10;
Swivel control head pressure sensor-11; Cover pressure sensor-12;
Pressure sensor-13 after choke valve; Liquid level sensor-14;
PWD is with brill pressure measuring tool-15; Hook weigh sensor-16.
Detailed description of the invention
As depicted in figs. 1 and 2, the setting device of well head goal pressure in controlled pressure drilling control system of the present invention, comprising:
Plc data acquisition module 1: image data information transmission is to the database 5 of Industrial Personal Computer (IPC) 3;
PWD/MWD instrument computer 2: this computer is the ground installation of DHM-MWD instrument PWD (with boring pressure measuring tool) and MWD (measurement while drilling instrument), for arranging tool parameters before lower brill, in drilling process, in real time by the lane database of decoded data storing at this computer, wherein partial data is graphically shown simultaneously, in controlled pressure drilling process by controlled pressure drilling parameter transmission in the database 5 of Industrial Personal Computer (IPC) 3, for the setting of well head goal pressure provides basic data, it is to the database 5 of Industrial Personal Computer (IPC) 3 by the data information transfer of measurement,
Industrial Personal Computer (IPC) 3: receive the data message of plc data acquisition module 1 and PWD/MWD instrument computer 2 input stored in database 5, by the data message of the data entry system 6 of inside stored in database 5, and all data messages received by database 5 feed back to inner digital display system 7, graphic display system 8 and seletion calculation comparison decision arranges 9, arrange 9 by seletion calculation comparison decision and data message is fed back to PLC executive system 4;
PLC executive system: the instruction that reception Industrial Personal Computer (IPC) 3 sends also performs.
Plc data acquisition module 1, PWD/MWD instrument computer 2 are respectively by the DataBase combining of netting twine and Industrial Personal Computer (IPC) 3, and seletion calculation comparison decision is arranged 9 and is connected by netting twine with PLC executive system 4, direct instruction PLC executive system 4.The database 5 of Industrial Personal Computer (IPC) 3 arranges 9 with the digital display system 7 of Industrial Personal Computer (IPC), graphic display system 8 and seletion calculation comparison decision respectively by data wire and is connected.
The data that plc data acquisition module 1 gathers comprise drilling fluid outlet temperature, drill-in fluid rate of discharge, drilling mud pumpage, the standpipe pressure recorded by vertical pressure sensor 10, the swivel control head pressure recorded by swivel control head pressure sensor 11, by cover pressure sensor 12 casing pressure, well head pressure, the throttling downstream pressure obtained by pressure sensor after choke valve 13 side and each slurry tank liquid level recorded by four liquid level sensors 14 that record.
PWD/MWD instrument computer 2 survey data comprises by PWD with boring the pressure of the drill, well depth, well vertical depth, bit location that pressure measuring tool 15 records, being recorded hook height, hook weigh, the real-time PWD pressure data recorded by pressure sensor by hook weigh sensor 16 and downloading PWD pressure data, recorded real-time PWD bottom hole temperature (BHT) and download PWD bottom hole temperature (BHT) by temperature pick up.
Cylinder sleeve of drilling pump size 3, drilling liquid parameter, casing programme and size, structure of downhole assembly and size that the data of the data entry system 6 of Industrial Personal Computer (IPC) 3 inside comprise, bottom pressure/equal yield density, well head goal pressure are set.
The method to set up of well head goal pressure in controlled pressure drilling control system of the present invention, it comprises the steps:
(1) first by PWD with bore pressure measuring tool data, PLC Real-time Collection controlled pressure drilling parameter and Industrial Personal Computer (IPC) control system with the various parameters of input system input stored in the database of controlled pressure drilling control system;
(2) after, scope is arranged to the PWD pressure data participating in calculating, undesirable, can not as the data calculated, minimum pressure values can not lower than the head of liquid of mud, maximum pressure value can not be greater than the annular pressure lost+well head pressure of more than bit location head of liquid+drill bit, and select multiple PWD to be averaged calculation of pressure, result is P1, well head goal pressure calculates, and its formula is as follows:
Mud fluid column pressure-P1+ well head pressure at that time under well head goal pressure=shaft bottom Offered target pressure-drill bit, setting well head goal pressure precision, namely the well head goal pressure calculated and the positive and negative difference range of real well mouth pressure, if in difference range, keep original well head goal pressure constant, if gone beyond the scope, be that well head goal pressure is arranged by the current well head goal pressure calculated;
(3) Industrial Personal Computer (IPC) issues instructions to PLC control system according to target well head pressure value, carrys out switching throttling valve opening by PLC logic control system, until real well mouth pressure is close to well head target pressure value.
In step (1), PWD is with brill pressure measuring tool data: with brill pressure measuring tool, measured bottom pressure is passed to ground decode system by the pulse signal of MWD instrument by PWD, be transferred to managed pressure drilling system again after being reduced by PWD pressure on the number, the database entering controlled pressure drilling control system is preserved.
The computer data acquisition of PWD/MWD instrument includes the pressure of the drill, well depth, well vertical depth, bit location, real-time PWD data, download PWD data, hook height, hook weigh, real-time PWD temperature, download PWD temperature data by the lane database of data line transfer to Industrial Personal Computer (IPC), MWD instrument measure or obtain data by burst transmissions to ground, then by ground decode system, by the data convert measured or obtain, be stored in the lane database of MWD instrument computer, ground hook set sensor simultaneously, drawworks sensor also passes data to MWD instrument computer, the pressure of the drill is obtained by software process, well depth, well vertical depth, bit location, hook height, data when hook weigh and brill, be stored in MWD instrument computer, all these data will be transferred to the lane database of the controlled pressure drilling control system of Industrial Personal Computer (IPC).
The parameter of PLC Real-time Collection controlled pressure drilling in step (1), these parameters comprise various pressure, pumpage, rate of discharge, hook height, well depth and well vertical depth, bit depth, pond volume, throttle valve opening.
In step (1) Industrial Personal Computer (IPC) control system with input system input parameter comprises casing programme, drilling assembly, mud property and parameter, shaft bottom arranges pressure, set PWD data participates in computer capacity, sets and participate in mean P WD pressure number and well head goal pressure accuracy rating value.
The each data recorded in step (1) are extracted by the lane database of data presentation system from Industrial Personal Computer (IPC), and display on a display screen.
In step (2), the general digital average pressures of participating in of 3 to 9 PWD of selecting calculate.
Example 1:
Record well depth 5000m by above-mentioned parts, mud density 1.2g/cm3, well head pressure 1 MPa, pumpage 12 liters/second, annular pressure lost 2 MPa, shaft bottom arranges pressure 63Mpa.
Drill bit is in shaft bottom: well head arranges the head of liquid-P1+ well head pressure at that time that pressure=shaft bottom arranges below pressure-drill bit;
Head of liquid=0 MPa (because drill bit is in shaft bottom) below drill bit;
P1＝(Pn-n+……Pn-3+Pn-2+Pn-1)/n＝(61.79+61.80+61.78+61.78+61.79)/5＝61.788MPa，
(Pn-n: must between drill bit place head of liquid and head of liquid+maximum annular pressure lost+well head pressure sum, namely between 58.8 MPas to 61.8 MPas, just may be used for calculating, herein: n=6, P1=61.79MPa, P2=61.80MPa, P3=61.78MPa, P4=61.78MPa, P5=69MPa, P6=61.79MPa; Attention: P5=69MPa can not participate in and calculate because he is not between required pressure scope);
Well head pressure 1 MPa at that time;
Well head arranges pressure=63 MPa-0 MPa-61.788 MPa+1=2.212 MPa;
If well head arranges pressure precision ± 0.02 MPa, the well head pressure later calculated is between 2.21 to 2.214, and well head arranges pressure and keeps 2.212 MPas constant.
Example 2
Drill bit is recorded at 3000 meters: well head arranges the head of liquid-P1+ well head pressure at that time that pressure=shaft bottom arranges below pressure-drill bit by above-mentioned parts;
Head of liquid below drill bit=1.2X0.0098X2000=23.52 MPa
P1＝(Pn-n+……Pn-3+Pn-2+Pn-1)/n＝(38.28+28.27+38.26+38.28+38.26)/5＝36.27MPa，
(Pn-n: must between drill bit place head of liquid and head of liquid+maximum annular pressure lost+well head pressure sum, namely between 35.28 MPas to 38.28 MPas, just may be used for calculating, herein: n=6, P1=38.28MPa, P2=38.27MPa, P3=38.26MPa, P4=38.28MPa, P5=45MPa, P6=38.26MPa; Attention: P5=45MPa can not participate in and calculate because he is not between required pressure scope)
Well head pressure 1 MPa at that time;
Well head arranges pressure=63 MPa-23.52 MPa-37.27 MPa+1=4.21 MPa;
If well head arranges pressure precision ± 0.02 MPa, the well head pressure later calculated is between 4.19 to 2.212, and well head arranges pressure and keeps 4.21 MPas constant.
The above embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that the common engineers and technicians in this area make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determine.
Claims (12)
1. the method to set up of well head goal pressure in controlled pressure drilling control system, is characterized in that: it comprises the steps:
(1) first by PWD with bore pressure measuring tool data, PLC Real-time Collection controlled pressure drilling parameter and Industrial Personal Computer (IPC) control system with the various parameters of input system input stored in the database of controlled pressure drilling control system;
(2) after, scope is arranged to the PWD pressure data participating in calculating, undesirable, can not as the data calculated, minimum pressure values can not lower than the head of liquid of mud, maximum pressure value can not be greater than the annular pressure lost+well head pressure of more than bit location head of liquid+drill bit, and select multiple PWD to be averaged calculation of pressure, result is P1, well head goal pressure calculates, and its formula is as follows:
Mud fluid column pressure-P1+ well head pressure at that time under well head goal pressure=shaft bottom Offered target pressure-drill bit, setting well head goal pressure precision, namely the well head goal pressure calculated and the positive and negative difference range of real well mouth pressure, if in difference range, keep original well head goal pressure constant, if gone beyond the scope, be that well head goal pressure is arranged by the current well head goal pressure calculated;
(3) Industrial Personal Computer (IPC) issues instructions to PLC control system according to target well head pressure value, carrys out switching throttling valve opening by PLC logic control system, until real well mouth pressure is close to well head target pressure value.
2. the method to set up of well head goal pressure in controlled pressure drilling control system as claimed in claim 1, it is characterized in that: in described step (1), PWD is with brill pressure measuring tool data: with brill pressure measuring tool, measured bottom pressure is passed to ground decode system by the pulse signal of MWD instrument by PWD, be transferred to managed pressure drilling system again after being reduced by PWD pressure on the number, the database entering controlled pressure drilling control system is preserved.
3. the method to set up of well head goal pressure in controlled pressure drilling control system as claimed in claim 2, is characterized in that: described MWD instrument computer data acquisition the pressure of the drill, well depth, well vertical depth, bit location, in real time PWD data, download PWD data, hook height, hook weigh, in real time PWD temperature, download PWD temperature data by the lane database of data line transfer to the controlled pressure drilling control system of Industrial Personal Computer (IPC).
4. the method to set up of well head goal pressure in controlled pressure drilling control system as claimed in claim 1, it is characterized in that: the parameter of PLC Real-time Collection controlled pressure drilling in described step (1), these parameters comprise various pressure, pumpage, rate of discharge, hook height, well depth and well vertical depth, bit depth, pond volume, throttle valve opening.
5. the method to set up of well head goal pressure in controlled pressure drilling control system as claimed in claim 1, is characterized in that: in described step (1) Industrial Personal Computer (IPC) control system with input system input parameter comprises casing programme, drilling assembly, mud property and parameter, shaft bottom arranges pressure, set PWD data participates in computer capacity, sets and participate in mean P WD pressure number and well head goal pressure accuracy rating value.
6. the method to set up of well head goal pressure in controlled pressure drilling control system as claimed in claim 1, is characterized in that: each data recorded in described step (1) are extracted by the lane database of data presentation system from Industrial Personal Computer (IPC), shows on a display screen.
7. the method to set up of well head goal pressure in controlled pressure drilling control system as claimed in claim 1, is characterized in that: generally in described step (2) select 3 to 9 PWD numerals to participate in average pressures to calculate.
8. the setting device of well head goal pressure in controlled pressure drilling control system, is characterized in that: comprising:
Plc data acquisition module: image data information transmission is to the database of Industrial Personal Computer (IPC);
PWD/MWD instrument computer: by the data information transfer of measurement to the database of Industrial Personal Computer (IPC);
Industrial Personal Computer (IPC): receive the data message of plc data acquisition module and the input of PWD/MWD instrument computer stored in database, by the data message of the data entry system of inside stored in database, and all data messages that database receives are fed back to inner numerical monitor, figure display and the setting of seletion calculation comparison decision, arranged by seletion calculation comparison decision and data message is fed back to PLC executive system;
PLC executive system: the instruction that reception Industrial Personal Computer (IPC) sends also performs.
9. the setting device of well head goal pressure in controlled pressure drilling control system as claimed in claim 8, it is characterized in that: described plc data acquisition module, PWD/MWD instrument computer are respectively by the DataBase combining of netting twine and Industrial Personal Computer (IPC), described seletion calculation comparison decision is arranged and is connected by netting twine with PLC executive system, and the database of described Industrial Personal Computer (IPC) is shown with the numerical monitor of Industrial Personal Computer (IPC), figure respectively by data wire and seletion calculation comparison decision arranges and is connected.
10. the setting device of well head goal pressure in controlled pressure drilling control system as claimed in claim 8, is characterized in that: each slurry tank liquid level that the data of described plc data acquisition module collection comprise drilling fluid outlet temperature, drill-in fluid rate of discharge, drilling mud pumpage, standpipe pressure, swivel control head pressure, casing pressure, well head pressure, throttling downstream pressure and recorded by four liquid level sensors.
The setting device of well head goal pressure in 11. controlled pressure drilling control systems as claimed in claim 8, is characterized in that: the data that described PWD/MWD instrument computer is measured comprise the pressure of the drill, well depth, well vertical depth, bit location, the real-time PWD pressure data recorded by liquid level sensor, the download PWD pressure data recorded by liquid level sensor, hook height, hook weigh, in real time PWD well temperature, download PWD bottom hole temperature (BHT).
The setting device of well head goal pressure in 12. controlled pressure drilling control systems as claimed in claim 8, is characterized in that: the data of the data entry system of described Industrial Personal Computer (IPC) inside comprise the cylinder sleeve of drilling pump size 3 recorded by liquid level sensor, the drilling liquid parameter recorded by liquid level sensor, the casing programme recorded by liquid level sensor and size, the structure of downhole assembly recorded by liquid level sensor and size, arrange bottom pressure/equal yield density, well head goal pressure.
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| CN106813911B (en) * | 2016-12-20 | 2019-11-08 | 中国石油天然气股份有限公司 | Hydro-efflux Hammer performance parameter testing device and its test method |
| CN109403957A (en) * | 2017-08-16 | 2019-03-01 | 中国石油化工股份有限公司 | A kind of high pressure formation pressure acquisition methods |
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| CN109441432A (en) * | 2018-10-23 | 2019-03-08 | 西南石油大学 | A kind of narrow ' Safe Density Windows strata drilling pit shaft cyclic pressure dissipation detection method |
| CN109441432B (en) * | 2018-10-23 | 2022-04-22 | 西南石油大学 | Method for detecting circulating pressure loss of stratum drilling shaft with narrow safety density window |
| CN111101892A (en) * | 2020-02-05 | 2020-05-05 | 电子科技大学 | Shale gas horizontal well shaft pressure test and toe end sliding sleeve starting combined method |
| CN111502546A (en) * | 2020-05-29 | 2020-08-07 | 中国石油天然气集团有限公司 | Method for turning off underground unit of rotary steering system through ground remote control |
| CN111502546B (en) * | 2020-05-29 | 2021-11-12 | 中国石油天然气集团有限公司 | Method for turning off underground unit of rotary steering system through ground remote control |
| WO2021238898A1 (en) * | 2020-05-29 | 2021-12-02 | 中国石油天然气集团有限公司 | Method for remotely turning off downhole unit from the surface applicable to rotary steering system |
| CN113236183A (en) * | 2021-06-22 | 2021-08-10 | 中海石油(中国)有限公司湛江分公司 | Throttle valve automatic control device and well bottom pressure regulating system under drilling working condition |
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