A high-pressure manifold device suitable for annular sand fracturing process

Abstract

The invention provides a high-pressure manifold device suitable for annular sand fracturing technology, which includes three pipelines, wherein pipeline I includes check valve 1 from left to right, and T connected to the outlet end of check valve 1 Type tee 1, cock 1 connected with T-type tee 1 and T-type tee 2 connected with cock 1; T-type tee 2 is connected with a casing pressure measuring sensor; pipeline II includes single Flow valve two, four-way connected to the outflow end of check valve two, and cock two connected to four-way; pipeline III includes cock three, check valve three, and one connected to the outflow end of check valve three from left to right. T-type three-way three, T-type three-way four connected with T-type three-way three; T-type three-way four is connected with an oil pressure measurement sensor; four-way is connected with T-type three-way one, and T-type three-way three is passed Cock four connections. The invention reduces the switching of vehicles during construction, improves the efficiency of fracturing construction, reduces labor intensity, and makes construction safe, convenient and reliable.

Description

technical field [0001] The invention belongs to the technical field of oil and gas field development and fracturing operations, and specifically relates to a high-pressure manifold device suitable for annulus sanding fracturing technology, which is used to connect annulus and oil pipes at the same time, and can change the flow direction of liquid at any time, and can improve the pressure of high-pressure pipes. The use efficiency of valve parts and the utilization rate of fracturing equipment. Background technique [0002] Fracturing is still the main method for formation stimulation and stimulation. In recent years, in order to increase single well production, the layout of horizontal wells has been the main focus. The fracturing stimulation process has also undergone major changes, especially the performance of horizontal wells in oil wells is more prominent. , Hydraulic pumping of bridge plugs and open hole packers, etc., but considering the risks in construction, the hyd...

AI Technical Summary

Problems solved by technology

[0003] (1) The sanding operation in the tubing injection annular space requires oil injection and casing injection equipment to be placed with sand tanks and a route for the sand tanks to be reserved, which increases the floor area and increases under the current situation that the well sites of oil horizontal wells are generally small Difficulties in placing equipment reasonably;

[0004] (2) Oil pipe jet injection displacement 2.8-3.0m 3 / min, the tubing injection displacement is 1.6-2.5m after the formation is opened 3 / min, this situation leads to low utilization rate of oil injection equipment after injection, wasting resources

Images