Connecting nipple of logging-while-drilling instrument
A logging-while-drilling, sub-joint technology, applied in drilling equipment, measurement, drill pipe, etc., can solve problems such as reducing service life, and achieve the effect of increasing service life, reducing non-drilling time, and facilitating installation
Active Publication Date: 2019-06-14
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology
A well-structured and reliable logging-while-drilling tool sub-joint is the simplest and most effective technical means to realize tool matching. The change problem, this kind of transformation is easy to form eddy current, most of the effective forms of the existing adapter pup joints are caused by the erosion caused by eddy current, and the erosion will greatly reduce the service life
And there is no transfer short section that can effectively solve this problem
Method used
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[0019] Such as figure 1 As shown, the adapter nipple of a logging-while-drilling instrument involved in the present invention is characterized in that it mainly consists of a copper ring 1, an inner sealing ring 2 of the copper ring, an adapter nipple body 3, a sealing joint 4, a copper The ring outer sealing ring 5 and the sealing joint sealing ring 6 are composed of a copper ring 1 and a sealing joint 4 respectively installed at the two ends of the adapter nipple body 3, two copper ring outer sealing rings 5 are installed on the upper and outer sides of the copper ring 1, and two copper ring outer sealing rings 5 are installed on the inner side A copper ring inner sealing ring 2 is installed, and the copper ring 1 is connected and fixed with the adapter nipple body 3 through a small interference fit. A sealing joint sealing ring 6 is installed on the outside of the sealing joint 4, and the adapter nipple is connected to the adapter nipple through the thread. The main bod...
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The invention relates to the technical field of measurement-while-drilling instruments for petroleum drilling, in particular to a connecting nipple of a logging-while-drilling instrument. The connecting nipple is mainly composed of a copper ring, an inner sealing ring of the copper ring, a connecting nipple body, a sealing joint, an outer sealing ring of the copper ring and a sealing joint sealingring, wherein the copper ring and the sealing joint are arranged at the two ends of the connecting nipple body correspondingly, and corresponding center adapting joints and side wall single-core pinsare installed on the two sides of the connecting nipple correspondingly. The side, where the center adapting joints are installed, of the connecting nipple body adopts a circumferential hole distribution design, seven small flow-through holes are symmetrically formed, the size of the small flow-through holes is consistent with the size of large flow-through holes in the side where the side wall single-core pins are installed, and transition holes with a larger flow-through area are formed between the large flow-through holes and the small flow-through holes. According to the connecting nipple, the matching use of logging-while-drilling instruments with different structures is realized, flow-through hole passages are optimized, the eddy current effect of flow-through slurry caused by the change of the flow-through area is effectively reduced, and the underground service life of the connecting nipple and the matching connected logging-while-drilling instrument can be effectively prolonged.
Description
technical field [0001] The invention relates to the technical field of measuring-while-drilling instruments for petroleum drilling, in particular to an adapter nipple of a logging-while-drilling instrument. Background technique [0002] At present, as unconventional oil and gas resources such as shale gas enter the stage of large-scale development, logging while drilling instruments at home and abroad have been widely used. Shops are everywhere. The functional sub-sections of logging-while-drilling instruments generally transmit electric energy and communication signals through wired connections. For the sake of their own instrument structure and functions, the instrument manufacturers adopt conductive rings on the end face of drill collars and drilling holes on the side walls. Pin and centered connector connections, etc. In order to improve the utilization rate of LWD tools and better serve the drilling site, LWD service providers generally maximize the tool utilization r...
Claims
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IPC IPC(8): E21B17/02E21B47/01
Inventor 王眉山魏晓东解光银张晓萍陈大祺张东旭
Owner BC P INC CHINA NAT PETROLEUM CORP
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