Method for fixation of underground storage (stock) gas well unit conjunction
A fixing method and gas storage well technology, applied to underwater structures, water conservancy projects, artificial islands, etc., to avoid losses, solve potential safety hazards, and achieve obvious effects
Inactive Publication Date: 2010-10-13
牟万福 +2
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[0002]With the rapid development of new technologies for high-pressure gas underground gas storage wells in my country and the large-scale promotion across the country, the number of underground gas storage wells used is increasing and the time is continuously extending , due to the cementing method and the uneven cementing quality limited by the formation, individual gas storage wells in different regions of my country have experienced tube bursts, causing underground well tubes to rush out of the ground, causing huge damage and loss to the lives and property of ground personnel
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[0017] B. Lay steel bars between each gas storage well unit, and fix the reinforcement mesh layer 4 parallel to each other on the gas storage well casing 2 that is sheathed on the outer periphery of the gas storage well pipe 1, generally by welding;
[0018] C. After fixing the reinforcement mesh layer 4, pour the mixed concrete 5 into the space around the casing 2 of the gas storage well and the space between the reinforcement mesh layer 4 for pouring and filling. After it solidifies, the well is ready for cementing.
[0019] In the above-mentioned step B, a plurality of hoops 3 are arranged at equal intervals on the outer circumference of the casing 2 of the gas storage well for reinforcement. The casing 2 of the gas storage well is directly connected with the reinforced concrete by the hoop 3 .
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The inventive method for fixation of underground storage (stock) gas well unit conjunction comprises the following steps of: digging a deep groove around a cluster of prepared gas storage wells with depth and area thereof being confirmed in accordance with the level of hardness and porosity of actual surface layer; laying steel rods at each gas storage well unit; fixing steel rod web layers that are mutually parallel and cross-fixed, on outer sleeves of the gas storage wells which are sleeved on peripheral of gas storage well pipes, with the welding fixation being employed in general; pouringstirred concrete in spaces around the outer sleeves of the gas storage wells and between the steel rod web layers for casting pad after fixing the steel rod web layers, and then fixing the wells subsequent to solidification thereof. The fixation method has prominent implementing effect in reinforced modification of well tube in early gas storage well, which solves the hidden safety danger caused by inferior quality of well fixation in early gas storage well. In the meantime, the fixation method has been applied in a plurality of projects that has a problem of overall subsidence during or after construction of the gas storage well due to loosened structure of the surface layer, and is also remarkable in usage, thus avoiding loss of ground personnel and property.
Description
technical field [0001] The invention relates to a method for fixing high-pressure gas storage equipment, in particular to a method for fixing underground gas well units. Background technique [0002] With the rapid development of new technologies for high-pressure gas underground gas storage wells in my country and the large-scale promotion across the country, more and more underground gas storage wells are used, and the time is continuously extended. Due to the reasons of the cementing method and the limitation of the formation Qi, individual gas storage wells in different regions of our country have successively burst tubes, causing underground well tubes to rush out of the ground, causing huge damage and loss to the lives and property of ground personnel. Relevant domestic departments and industry experts and scholars have put forward higher safety requirements for this high-pressure, flammable and explosive storage equipment, that is, even if the cementing quality of the...
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IPC IPC(8): E02D29/045
Inventor 牟万福王鹏王健
Owner 牟万福