Well head mud removing device

A swirl device and mud storage technology, applied in the field of oil and gas field exploration and development, can solve problems such as unsatisfactory treatment effect, and achieve the effects of improving mud removal effect, improving construction quality and reducing work-related incidents.

Inactive Publication Date: 2017-01-04
CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem that the treatment effect of the existing mud and sand with smaller particle size (15-74 microns) is not ideal, and the original sand remover can no longer fully meet the requirements of high-efficiency filtration of mud and sand in the flowback liq

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1:

[0025] In order to overcome the unsatisfactory effect of the existing treatment of sand with a smaller particle size (15-74 microns), the original desander can no longer fully meet the problem that the requirements for highly effective filtration of the mud and sand in the flowback fluid can be removed. The present invention provides: figure 1 with figure 2 A wellhead desilting device is shown, which can effectively filter out solid particles such as silt and sand, and the silt removal efficiency is as high as over 90%, which largely avoids damage to downstream equipment on the ground. The invention breaks through the principle and structure of conventional desander, realizes two-stage separation through the combined form of one-to-four cyclone desiccator, and achieves two-stage separation through the two-stage cyclone with different swirl taper, processing capacity and supporting feed The outlet manifold effectively improves the sludge removal effect of each ...

Example Embodiment

[0028] Example 2:

[0029] Based on the above embodiment, in this embodiment, as image 3 As shown, the first-level cyclone device I includes a first-level cyclone 2 and a first-level mud storage tank 3, the first-level cyclone 2 and the first-level mud storage tank 3 are connected by an isolation plate valve 12, the A pressure relief valve 13 is provided on the primary mud storage tank 3, and a mud drain cock 10 is provided at the lower end of the primary mud storage tank 3. The first-stage cyclone device I relies on centrifugal force and gravity to separate solid particles such as mud.

[0030] The rated working pressure of the first-stage cyclone 2 is 35MPa, the diameter of the cyclone is ø190mm, the processing capacity under the rated working pressure: 1652L / S, the diameter of the liquid inlet: ø50mm, the diameter of the liquid outlet: ø65mm, the diameter of the mud outlet : Ø52mm, cyclone cone angle: 16°, separation size: 45~74um, volume of first-level mud storage tank 3: ≥15...

Example Embodiment

[0038] Example 3:

[0039] Based on the above embodiment, in this embodiment, as Figure 5 As shown, a level gauge 4 is provided on the primary mud storage tank 3.

[0040] The level gauge 4 is connected to the primary mud storage tank 3 through a straight joint 14.

[0041] The level gauge 4 is a glass plate level gauge with a working pressure of 35 MPa.

[0042] The level gauge 4 used in this device measures the liquid level in the primary mud storage tank 3 and can effectively remove the sludge in the primary mud storage tank 3 in time.

[0043] Process comparison table of the original desander and the desander device of the present invention

[0044] Serial number Existing process Process of the invention 1 One swirl tube with one sand storage tank One main swirling cylinder, four auxiliary swirling cylinders, each swirling cylinder is equipped with a mud storage tank 2 1 flat valve with 1 sand discharge cock 5 flat valves (Cameron FL structure, valve plate with cemented carbide...

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Abstract

The invention provides a well head mud removing device. The well head mud removing device comprises a primary rotational flow device and four secondary rotational flow devices, wherein the four secondary rotational flow devices are uniformly distributed at the periphery of the primary rotational flow device, and the top of the primary rotational flow device is communicated with the four secondary rotational flow device through a shunt manifold; the lower ends of the primary rotational flow device and the four secondary rotational flow device are all connected with a mud discharging pipeline; outlets in the tops of the four secondary rotational flow devices are communicated through a gathering pipeline. According to the well head mud removing device, two stages of separation is realized through the combination of four rotational flow mud removing machines instead of one rotational flow mud removing machine, and each stage of mud removing effect is effectively improved through different rotational flow difficulties, handling capacity and matched inlet and outlet manifolds of the two stages of rotational flow devices. According to the device, not only can the mud filtering effect of the well head mud removing device be improved, but also downstream equipment can be protected effectively.

Description

technical field [0001] The invention relates to the protection technology for downstream equipment in the fields of oil and gas field exploration and development, ground testing, test production operations, sand discharge and gas recovery operations, and post-pressure flowback operations. Background technique [0002] Various types of desanders are widely used in oil and gas field exploration and development to better protect downstream equipment and complete production tasks with higher construction quality. [0003] At present, the widely used cyclone desander has been tested on the ground and flowback after fracturing. It is found that the particle size of the mud and sand produced by the oil and gas well is too small, resulting in poor desilting effect, so that the construction quality cannot be effectively guaranteed. [0004] In recent years, the exploration and development technology and technology of Changqing Oilfield have been continuously improved, and the product...

Claims

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Application Information

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IPC IPC(8): E21B43/34
CPCE21B43/34
Inventor 高森龙庆陈磊时峥樊伟赵志华孙飞肖福全
Owner CHINA NAT PETROLEUM CORP CHUANQING DRILLING ENG CO LTD CHANGQING DOWNHOLE TECH CO
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