Fluid separation device
A separation device and fluid technology, applied in the directions of sealing/packing, wellbore/well components, earth-moving drilling, etc., can solve the problem of fluid separation device stuck in the well, etc.
Active Publication Date: 2019-03-26
成都百胜野牛科技有限公司
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Problems solved by technology
The fluid separation device provided in the related art is difficult to pass through the part where the inner diameter of the shaft suddenly decreases
Even if the minimum outer diameter of the fluid separation device is smaller than the minimum inner diameter of the well after the shrinkage of the packer, there is still the problem that the fluid separation device is easily stuck in the part where the inner diameter of the well suddenly decreases
Method used
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Embodiment 1
[0040] figure 2A schematic diagram of the three-dimensional structure of the fluid separation device 020 provided in this embodiment. Fluid separation device 020. The fluid separation device 020 provided in this embodiment can also be called a plunger, and it is used to lift the fluid accumulated at the bottom of the shaft of an oil or gas well to the outside of the well. In the shut-in state, the pressure difference between the wellhead and the bottom of the well decreases, and the fluid separation device 020 falls to the bottom of the well under the action of its own gravity. When the well is open, the pressure between the wellhead and the bottom of the well increases, and the fluid separation device 020 moves upward under the action of the fluid pressure below it, and then lifts the fluid above it to the wellhead, and the fluid is discharged out of the well through the wellhead . In this way, the loss of production of the oil or gas well due to fluid accumulation can be...
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The invention relates to the technical field of natural gas oil exploitation and provides a fluid separation device. The outer surface of end portion of a packer in the axial direction is a bias pressure surface, and in the axial direction away from the packer, the bias pressure surface extends inwards in the radial direction. Therefore, when the fluid separation device passes through a part wherethe inner diameter of a well suddenly becomes small, the bias pressure surface of one end of the packer is squeezed, and the generated axial force drives the packer to move axially until the other end of the packer abuts against a supporting portion. The part of the packer abutting against the supporting portion is taken as a supporting point, and the generated radial component force drives one end with the squeezed bias pressure inclined plane to be deflected inwards in the radial direction. Therefore, the packer can be smoothly radially shrunk inwards, so that the fluid separation device can smoothly pass through the part where the inner diameter of the well suddenly becomes small.
Description
technical field [0001] The invention relates to the technical field of natural gas and oil exploitation, in particular to a fluid separation device. Background technique [0002] During the development of oil or natural gas wells, in order to increase the production of oil or natural gas, it is necessary to lift the accumulated fluid at the bottom of the well to the surface. [0003] A fluid separation device is provided in the related art. A plurality of spacers are arranged on the periphery of the mandrel of the fluid separation device, and these spacers are always in contact with the inner wall of the hoistway to form a seal under the action of the elastic member. In the shut-in state, the fluid separation device goes down to the bottom of the well. When the well is opened, the pressure generated by the gas below the fluid separation device drives the fluid separation device upward, the liquid above the fluid separation device is lifted by the fluid separation device, a...
Claims
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Login to View More IPC IPC(8): E21B33/12
CPCE21B33/1208
Inventor 刘书豪唐勇陈俊宏苏诗策刘树飞张忠林
Owner 成都百胜野牛科技有限公司