Wellhead Suction and Drainage Manifold System for Oil and Gas Drilling

Abstract

The invention provides an oil and gas drilling well wellhead pumping assist-drainage manifold system. The oil and gas drilling well wellhead pumping assist-drainage manifold system includes a plurality of hard pipeline pipe bodies, an adjustable annular pumping assist-drainage mechanism for a drilling well sand discharging pipeline, and a telescopic pipeline length adjusting mechanism for the drilling well sand discharging pipeline, wherein the adjustable annular pumping assist-drainage mechanism can realize the negative pressure pumping effect on a drilling well wellhead and / or the pipeline cornering position, and the telescopic pipeline length adjusting mechanism can realize telescopic connection. According to the oil and gas drilling well wellhead pumping assist-drainage manifold system, the difficult problem of safety when gas drills a well and opens the well under the condition of small amount of natural gas generated by a formation can be solved, the safety of gas bearing interval gas for drilling the well and opening the well is significantly improved, the oil and gas drilling well wellhead pumping assist-drainage manifold system can also be applied to conventional positivecirculation or reverse circulation gas well drilling, and thus the local loss at the right angle cornering position is significantly lowered, so that the ground surface sand discharging process is more smooth; the length of the sand discharging pipeline can be further adjusted easily, conveniently and quickly and optionally, the sand discharging pipeline is quickly connected in a butt joint mode,repeated lifting and prying are avoided, the workload and the work intensity of staff are lowered, the installation operation cycle is shortened, and the operation personnel cost and the crane use cost are saved.

Description

technical field [0001] The present invention relates to the technical field of oil and gas drilling (drilling) engineering, and furthermore, relates to a sand discharge manifold equipment system for drilling, which can be used to carry out nitrogen suction safety operations under the condition of a small amount of natural gas from the formation, and can also be used for positive circulation or During reverse circulation drilling, the sand discharge resistance of the surface sand discharge manifold can be reduced, and the sand discharge effect can be improved. Background technique [0002] In general, gas drilling technology has the advantages of speed increase, leakage control and reservoir protection. In recent years, it has been widely used in Sichuan-Chongqing, Xinjiang, Qinghai and other oil and gas blocks, and the speed of conventional drilling has been increased by more than 3 times compared with the same period of last year. It is more and more common to use gas drill...

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Problems solved by technology

[0009] For example, one of the objectives of the present invention is to solve the safety problem of gas drilling open well operation under the condition of a small amount of natural gas from the formation and the difficulty of connecting the sand discharge pipeline in the well site of gas drilling

Another object of the present invention is that it can be used to solve the problem of conventional positive circulation or reverse circulation gas drilling (especially reverse circulation drilling), where there are many right-angle turns in the sand discharge channel on the surface, resulting in a large local loss, which in turn affects the discharge. The problem of sand effect, and the difficulty of docking the sand discharge pipeline in the well site of gas drilling

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