Sealing device for flow choking pipe
A technology of sealing device and choke tube, which is applied in sealing/isolation, wellbore/well parts, earthwork drilling and production, etc., and can solve problems such as air and ground pollution, sealing grease cannot be effectively recovered, and complex structure , to avoid damage, simple structure, easy to take effect
Active Publication Date: 2015-12-09
XINJIANG SINOGASOLINEEUM ENG
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- Description
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- Application Information
AI Technical Summary
Problems solved by technology
[0003] The existing recovery device for sealing grease has a complex structure and cannot effectively complete the recovery work for sealing grease
The discharge method adopted at the outlet of the existing sealant grease is often accompanied by large-area air and ground pollution caused by natural gas ejection at the outlet of the sealant grease
Method used
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Embodiment 1
[0049] Such as figure 1 As shown, a sealing device for a choke tube, the choke tube assembly includes a choke tube 1, a blowout preventer 2, a wellhead connector connected to an oil well, and the choke tube 1 together A fixed frame 4 arranged on the shaft; the sealing device includes a grease injection assembly 5 and a recovery assembly 6 respectively connected to the choke tube 1;
[0050] Such as figure 1 As shown, the grease injection assembly 5 includes a storage tank 7 and a hydraulic pump 8 arranged on the storage tank 7;
[0051] The recovery assembly 6 includes a filter barrel 9 with a filter screen 10 and a fixing ring 11 on the upper end and the side wall respectively.
[0052] The choke tube 1 is formed by connecting single choke tubes in series, and the single choke tubes are connected by a cylindrical connector 12 .
[0053] The storage tank 7 is a sealing grease storage tank, and its upper end is provided with a feeding hole and a connection hole connected wit...
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The invention relates to a sealing device for a flow choking pipe. A flow choking pipe assembly comprises the flow choking pipe, a blowout prevention pipe, a wellhead connecting piece which is connected with an oil well, and a fixing rack which is coaxially arranged with the flow choking pipe, wherein the flow choking pipe, the blowout prevention pipe, the wellhead connecting piece and the fixing rack are sequentially connected. The sealing device comprises grease injection assemblies and a recycling assembly which are connected with the flow choking pipe. Each grease injection assembly comprises a storage tank and a hydraulic pump arranged on the storage tank. The recycling assembly comprises a filter vat with the upper end and the side wall being provided with a filter net and a fixing ring respectively. The sealing device for the flow choking pipe has the advantages of enabling the flow choking pipe to operate stably, lowering production cost and simplifying operation processes.
Description
technical field [0001] The invention relates to a sealing device, in particular to a sealing device for a choke tube. Background technique [0002] During the oil and gas well steel wire testing process, in order to prevent blowout, a choke tube should be installed on the ground blowout prevention part, and sealing grease should be injected into the choke tube to seal the fit gap between the steel wire and the choke tube to prevent leakage, so that the steel wire installed in the oil and gas well Maintain a dynamic seal with the choke tube. In order to ensure that the impurities adsorbed on the surface of the steel wire do not block the choke tube, causing the steel wire to be stuck in the choke tube and interrupt the construction. Therefore, it is necessary to provide a sealing device for the choke tube to ensure the normal operation of the choke tube. [0003] The existing recovery device for sealing grease has a complex structure and cannot effectively complete the reco...
Claims
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IPC IPC(8): E21B33/03
Inventor 朱进府周建平王群琪凌涛路尧李志国高尊生曹华高文祥张春达
Owner XINJIANG SINOGASOLINEEUM ENG