CN108316920B - Downhole gas logging and drilling test device - Google Patents
Downhole gas logging and drilling test device Download PDFInfo
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- CN108316920B CN108316920B CN201710029886.6A CN201710029886A CN108316920B CN 108316920 B CN108316920 B CN 108316920B CN 201710029886 A CN201710029886 A CN 201710029886A CN 108316920 B CN108316920 B CN 108316920B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/081—Obtaining fluid samples or testing fluids, in boreholes or wells with down-hole means for trapping a fluid sample
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics And Detection Of Objects (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
本发明提供一种井下随钻气测录井测试装置，包括液压模块，气体检测模块，控制模块和泥浆脉冲发生器，通过该液压模块中活塞的移动，使环空钻井液流入该液压模块中，该气体检测模块测量环空钻井液内甲烷气体的含量，并由该测量值，确定地层中的甲烷气体的浓度，并将气体浓度数据传输到该控制模块，该控制模块处理该气体检测模块传来的数据，并将需要上传到地面系统的数据传送到该泥浆脉冲发生器，该泥浆脉冲发生器将需要上传到地面系统的数据信号转变成泥浆脉冲信号，并传输给地面系统，地面系统将泥浆脉冲信号解读后得到上传数据。该井下随钻气测录井测试装置可以实时、在线实现井下气体参数检测，提升测试结果的准确性。
The present invention provides a downhole gas logging while drilling test device, comprising a hydraulic module, a gas detection module, a control module and a mud pulse generator. The piston in the hydraulic module moves to allow the annular drilling fluid to flow into the hydraulic module. The gas detection module measures the content of methane gas in the annular drilling fluid, and determines the concentration of methane gas in the formation based on the measured value, and transmits the gas concentration data to the control module. The control module processes the data transmitted by the gas detection module, and transmits the data to be uploaded to the ground system to the mud pulse generator. The mud pulse generator converts the data signal to be uploaded to the ground system into a mud pulse signal, and transmits it to the ground system. The ground system interprets the mud pulse signal to obtain the uploaded data. The downhole gas logging while drilling test device can realize downhole gas parameter detection in real time and online, and improve the accuracy of the test results.
Description
Technical Field
The invention relates to the field of oil and gas exploration and development, in particular to a logging-while-drilling testing device.
Background
Conventional gas logging techniques indirectly evaluate the formation by collecting the gas (including mixtures of methane, carbon dioxide, and hydrogen sulfide) in drilling fluid returned to the surface, and measuring the composition of the material. The drilling fluid needs to flow through a longer annular pipeline (the pipeline length is different along with the different drilling depths and is generally as long as several kilometers), the information lag is serious, the information about the underground drill bit can not be reflected in real time, meanwhile, in the flowing process of the drilling fluid flowing back to the ground through the annular space, the temperature, the pressure and other related environmental conditions are dynamically changed along with the flowing of the drilling fluid in the pipeline, the dissolved gas in the drilling fluid can be converted into free state in the flowing process, part of the gas can enter a deaerator for deaeration along with the drilling fluid, but part of the gas can escape into the air through the liquid level after the drilling fluid rises to the ground, and the accuracy of the subsequent gas detection data is affected.
In recent years, the drilling speed and efficiency requirements are higher and higher, the requirements on gas analysis, safety and the like are stricter, and the traditional gas logging technology is difficult to meet the requirements of oil and gas exploration and development. Therefore, the invention provides a novel underground logging-while-drilling testing device, which solves the technical problems.
Disclosure of Invention
The invention aims to provide a downhole logging-while-drilling testing device for carrying out on-line and real-time detection and analysis on gas dissolved in drilling fluid in a downhole high-temperature and high-pressure environment.
The underground logging while drilling testing device comprises a hydraulic module, a gas detection module, a control module and a mud pulse generator, wherein annular drilling fluid flows into the hydraulic module through movement of a piston in the hydraulic module, the gas detection module is connected with the hydraulic module, the content of methane gas in the annular drilling fluid is measured, the concentration of the methane gas in a stratum is determined according to the measured value, gas concentration data are transmitted to the control module, the control module is connected with the gas detection module, data transmitted by the gas detection module are processed, data needing to be uploaded to a ground system are transmitted to the mud pulse generator, the mud pulse generator is connected with the control module, data signals needing to be uploaded to the ground system are converted into mud pulse signals, the mud pulse signals are transmitted to the ground system, and the ground system reads the mud pulse signals to obtain uploaded data.
The aim of the invention can be achieved by the following technical measures:
the downhole logging while drilling testing device further comprises a filtering module, wherein the filtering module is positioned below the hydraulic module to remove rock debris in the annular drilling fluid.
The underground logging while drilling testing device also comprises a pressure compensation module, wherein the pressure compensation module is connected with the hydraulic module, so that the oil tank pressure of the hydraulic module is slightly higher than the annular pressure, and the oil tank pressure of the hydraulic module is automatically adjusted under different depths.
The downhole logging while drilling testing device further comprises a downhole power module, wherein the downhole power module is connected with the hydraulic module, the gas detection module, the control module and the mud pulse generator to provide power.
The downhole power module comprises a high-temperature battery pack and a mud turbine generator, wherein the mud turbine generator is a main power supply of the downhole logging while drilling testing device, and the high-temperature battery pack is a standby power supply.
The hydraulic module further comprises a temperature sensor, a pressure sensor and a displacement sensor, wherein the temperature sensor, the pressure sensor and the displacement sensor collect underground temperature, pressure and displacement data.
The underground gas logging-while-drilling testing device can realize the parameter detection of underground gas (such as methane, carbon dioxide, hydrogen sulfide and the like) on line in real time, solves the problem of information lag caused by the ground detection of the traditional gas logging, improves the accuracy of testing results and provides valuable guiding information for subsequent exploration and development.
Drawings
FIG. 1 is a block diagram of one embodiment of a downhole logging while drilling test apparatus of the present invention;
FIG. 2 is a schematic diagram of a downhole logging while drilling test device in accordance with an embodiment of the present invention.
Detailed Description
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments, as illustrated in the accompanying drawings.
As shown in fig. 1 and 2, fig. 1 is a structural diagram of a downhole logging while drilling test device according to the present invention, and fig. 2 is a schematic diagram of a downhole logging while drilling test device. The underground logging while drilling testing device comprises a mud pulse generator 1, an underground power supply module 2, a control module 3, a pressure compensation module 4, a gas detection module 5, a hydraulic module 6 and a filtering module 7.
And the filtering module 7 is used for removing rock debris in the annular drilling fluid so as to prevent large particles from entering the hydraulic system and causing serious damage to the hydraulic cylinder and the hydraulic valve. Because the downhole tool needs to have 3-4 days of fault-free working time, the filter module 7 is required to be capable of continuously and normally filtering in a longer time, namely, has the function of preventing formation of mud cakes, and the filter module 7 can be a filter screen or a centrifugal machine and is characterized by blocking prevention.
The hydraulic module 6 is connected to the filter module 7, and is an action executing mechanism of the device, and comprises a hydraulic pump, a hydraulic integrated block, a hydraulic valve, a hydraulic cylinder, a temperature sensor, a pressure sensor, a displacement sensor and the like. The main functions are to execute the actions of mud suction, mud depressurization and mud discharge.
The gas detection module 5 is connected to the hydraulic module 6, is connected with the underground power module 2 and the control module 3 through a circuit, and is used for measuring the content of methane and other gases in annulus drilling fluid, determining the concentration of methane and other gases in the stratum according to the measured value, and transmitting the gas concentration data to the control module.
The pressure compensation module 4 is connected to the hydraulic module 6, one side of the piston of the pressure compensation module is connected with the oil tank of the hydraulic module 6, the other side of the piston of the pressure compensation module is connected with annular mud and a compression spring, and the oil tank pressure of the hydraulic module, the annular pressure under different well depths and the spring pressure can be kept in dynamic balance, so that the oil tank pressure of the hydraulic module 6 is slightly higher than the annular pressure, namely, hydraulic oil is only allowed to leak in one direction to the annular space, and drilling fluid in the annular space is not allowed to enter the hydraulic module 6. Simultaneously, the module realizes the automatic adjustment of the oil tank pressure of the hydraulic module 6 under different depths along with the change of the well depth under the testing device.
The control module 3 is connected to the pressure compensation module 4, and is connected to the mud pulse generator 1, the underground power module 2 and the control module 3 through circuits, and is used for receiving an operation instruction transmitted to the underground by the ground system, then controlling the hydraulic module 6 by utilizing a singlechip program, collecting, storing and processing state information (comprising a temperature sensor, a pressure sensor and a displacement sensor in an example) of a sensor in the testing device, processing data transmitted by the gas detection module 5, and transmitting the data required to be uploaded to the ground system to the mud pulse generator 1.
The downhole power module 2 is connected with the mud pulse generator 1, the control module 3, the gas detection module 5 and the hydraulic module 6, and comprises a high-temperature battery pack and a mud turbine generator. The invention works underground for a long time, so that the mud turbine generator is used as a main power supply of the testing device to supply power to the components with large power consumption such as the oil immersion motor, the electromagnetic valve and the like in the hydraulic module 6, and the high-temperature battery pack is used as a standby power supply to supply power to the mud pulse generator 1, the control module 3 and the gas detection module 5, so that the testing device is ensured to be controlled normally when the mud turbine generator fails.
The mud pulse generator 1 is connected with the control module 3 and is connected with the underground power supply module 2 through a circuit to convert a data signal to be uploaded to the ground system into a mud pulse signal and transmit the mud pulse signal to the ground system, and the ground system reads the mud pulse signal to obtain uploading data
The outer cylinder of the testing device is connected with a standard drill collar 9 through an adapter 8 and is arranged near a drill bit 10;
The modules in the test device utilize electrical connection plugs, fluid communication connectors to accomplish electrical coordination and fluid transfer between the modules.
The operation process of the underground logging while drilling testing device is as follows:
In a first step, the volume of the rodless cavity of the hydraulic cylinder is increased from zero by the movement of the piston in the hydraulic module 6, a low pressure is formed in the testing device, and annulus drilling fluid flows into the rodless cavity of the hydraulic cylinder in the hydraulic module 6 through the hole 71. During inflow, the filter module 7 removes cuttings from the drilling fluid.
In the second step, the control module 3 closes a stop valve in the hydraulic module 6, one end of the stop valve is communicated with the annular space, and the other end of the stop valve is communicated with the rodless cavity of the hydraulic cylinder. Meanwhile, the volume of the rodless cavity of the hydraulic cylinder is continuously increased, and the drilling fluid is rapidly reduced from high pressure to low pressure and is separated out along with gas due to the fact that the mass of the drilling fluid flowing into the rodless cavity of the hydraulic cylinder is unchanged but the volume of the drilling fluid is increased. The gas detection module 5 can detect the gas precipitated in the low-pressure environment and send the data to the control module 3. After processing and analyzing the data, the control module 3 transmits the result to the surface system through the mud pulser 1.
And thirdly, after the gas measurement is finished, the hydraulic module 6 opens a stop valve and pushes the piston to return, so that the drilling fluid in the hydraulic cylinder after the detection is finished is discharged into the annulus. In one example, drilling fluid is discharged from within the testing device through the bore 71 to the annulus. In another example, from another orifice in the hydraulic module 6 in communication with the annulus to the annulus.
In summary, the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710029886.6A CN108316920B (en) | 2017-01-16 | 2017-01-16 | Downhole gas logging and drilling test device |
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| CN201710029886.6A CN108316920B (en) | 2017-01-16 | 2017-01-16 | Downhole gas logging and drilling test device |
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| CN108316920A CN108316920A (en) | 2018-07-24 |
| CN108316920B true CN108316920B (en) | 2025-04-15 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109812264A (en) * | 2019-03-19 | 2019-05-28 | 辽宁石油化工大学 | A logging equipment for real-time detection downhole and its application |
| CN110821454B (en) * | 2019-11-29 | 2022-02-11 | 中国石油大学(华东) | Downhole pulse generating device driven by oil pipe transmission and injection method |
| CN113847017B (en) | 2021-09-28 | 2022-08-12 | 西南石油大学 | A pressure pulse-while-drilling communication system and method suitable for gas drilling |
| CN119981725B (en) * | 2023-11-10 | 2025-11-21 | 中国石油天然气集团有限公司 | An experimental apparatus and method for gas logging based on drilling fluid flow patterns in the wellbore. |
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| CN102305784A (en) * | 2011-05-13 | 2012-01-04 | 北京师范大学 | Rapid laser Raman spectrum hydrocarbon detection method for drilling fluid |
| CN102305783A (en) * | 2011-05-13 | 2012-01-04 | 北京师范大学 | Optical fiber laser Raman device for multi-parameter analysis of drilling fluid |
| CN102242610A (en) * | 2011-05-13 | 2011-11-16 | 北京师范大学 | Development of drill collar for detecting hydrocarbons while drilling |
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| CN102914530A (en) * | 2011-08-05 | 2013-02-06 | 中国石油化工集团公司 | Raman spectrum gas detection system as well as detection method and application thereof |
| CN205175738U (en) * | 2015-10-28 | 2016-04-20 | 江西迪瑞合成化工有限公司 | Pressure reation kettle automatic sampler |
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| CN104634770A (en) * | 2013-11-07 | 2015-05-20 | 中国石油化工股份有限公司 | Gas online quantitative mixed supercharging system for Raman spectrometer and operation method thereof |
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Effective date of registration: 20240117 Address after: Room 1202, No. 22, Chaoyangmen North Street, Chaoyang District, Beijing 100020 Applicant after: Sinopec Petroleum Engineering Technology Service Co.,Ltd. Applicant after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant after: Sinopec Jingwei Co.,Ltd. Applicant after: Shengli geological logging company of Sinopec Jingwei Co.,Ltd. Address before: Room 703, block a, Beichen world center, 8 Beichen West Road, Chaoyang District, Beijing 100020 Applicant before: SINOPEC OILFIELD SERVICE Corp. Applicant before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Applicant before: GEOLOGICAL LOGGING BRANCH OF SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. |
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Effective date of registration: 20250630 Address after: 100020 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: SINOPEC Group Country or region after: China Patentee after: Sinopec Petroleum Engineering Technology Service Co.,Ltd. Patentee after: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee after: Sinopec Jingwei Co.,Ltd. Patentee after: Shengli geological logging company of Sinopec Jingwei Co.,Ltd. Address before: Room 1202, No. 22, Chaoyangmen North Street, Chaoyang District, Beijing 100020 Patentee before: Sinopec Petroleum Engineering Technology Service Co.,Ltd. Country or region before: China Patentee before: SINOPEC SHENGLI PETROLEUM ENGINEERING Co.,Ltd. Patentee before: Sinopec Jingwei Co.,Ltd. Patentee before: Shengli geological logging company of Sinopec Jingwei Co.,Ltd. |