Underground multi-engineering-parameter measuring nipple for well workover and measuring method thereof
A parameter measurement and multi-engineering technology, which is applied in the directions of measurement, wellbore/well components, drilling automatic control system, etc., can solve the problems of affecting the distribution of geomagnetic lines, not applicable, and unable to measure accurately, so as to eliminate measurement errors and improve The effect on success rate
Pending Publication Date: 2021-11-16
中国电波传播研究所 +1
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Problems solved by technology
However, workover operations are carried out in production wells that already have metal casings, which will affect the distribution of geomagnetic lines, making the above methods unable to measure accurately
[0006] At present, there are no system products suitable for measuring engineering parameters such as drilling pressure, tension, torque, number of rotations, and annular pressure near tools in well workover operations in China.
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Embodiment 1
[0033] Example 1, such as figure 1 As shown, this embodiment discloses a downhole multi-engineering parameter measuring sub for well workover, including a drill collar body 1, and a workover fluid circulation channel 2 is set in the axial center of the drill collar body to ensure that the workover fluid normal cycle. The drill collar body is made of high-strength non-magnetic stainless steel, which is a metal elastic body. When the drill collar body is subjected to axial pressure, tension (hereinafter collectively referred to as tension) torque, it will produce elastic strain, and the size of the elastic strain is the same as the applied force. , The size of the moment is proportional to. Such as figure 2 As shown, on the outer wall of the drill collar body, three circuit board compartments 3 are evenly distributed at intervals of 120° in the circumferential direction. Bolt on. Sensor components and circuit boards are respectively installed in each circuit board compartme...
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The invention discloses an underground multi-engineering parameter measuring nipple for well workover and a measuring method. The nipple comprises a drill collar body, a well workover fluid circulation channel is formed in the axial center of the drill collar body, three circuit board bins are evenly distributed on the outer wall of the drill collar body in the circumferential direction at intervals of 120 degrees, and each circuit board bin is sealed by a circuit board bin cover plate; and a sensor assembly and a circuit board are installed in each circuit board bin, a strain gauge bin is arranged on the bottom face of each circuit board bin, the strain gauge bins are in communication through wire passing holes, and eight strain gauges are pasted in each strain gauge bin. The measuring nipple can be connected in series to a position close to a well workover tool underground, and enters a well together with the well workover tool for operation, so that the measuring error caused by the friction resistance of an upper drill rod is eliminated, and the problem that ground measuring data cannot accurately reflect the actual underground condition is solved.
Description
technical field [0001] The invention belongs to the field of well workover operations, in particular to a downhole multi-engineering parameter measuring sub-joint for well workover and a measurement method thereof. Background technique [0002] Workover operation is an operation of oil drilling and subsequent oil well maintenance. It is a maintenance and maintenance measure taken to ensure the smooth production of oil wells. Routine tasks in well workover operations are mainly complex fish (falling objects in the well) salvage and oil well casing repair. During the operation, it is often necessary to make buckles and pull damaged casings. During these operations, the drilling pressure, tension, torque, number of rotations, and annular pressure at the downhole near the workover tools are all important. Construction parameters are directly related to the success of workover operations. [0003] The existing downhole engineering parameter measurement technology at home and ab...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E21B47/00E21B47/007E21B47/06E21B44/06E21B21/08
CPCE21B47/00E21B47/007E21B47/06E21B44/06E21B21/08
Inventor 赵昱张拉拉杨炜华谭庆林
Owner 中国电波传播研究所