Our independent innovation of patent technology such as whole combination valve type Dual Completion Wellhead, valve stem self-styled type composite seal, double seat plate valve, two-way counter balance valve etc. With high technical content, strong ability to resist bad working conditions, can enhance oil recovery efficiency, oil well productivity directly.
New type of Dual Completion Wellhead, can hang two pipe string at the same time, to work at different oil reservoir in the meantime. Or extract oil and water infusion at same oil reservoir, make each oil reservoir of the whole well completely exploited, improve recovery efficiency. When exploit oil (gas ) in different oil reservoirs at the same time, put two sets of tubing in casing to different oil reservoirs, with the packer to separate two sets of tubing, based on the characteristics of different oil reservoirs, exploit different oil reservoirs. Has the following advantages:
A. Relief low pressure oil reservoir, increase oil well output;
B. Can take the whole quasi-small layer of information, control the speed of sleep up to extend the low water cut;
C. Form two absolutely independent of oil production system, can give full play to the production capacity of each reservoirs, extract oil and water infusion at same oil reservoirs, make each oil reservoir of the whole well completely exploited, improve recovery efficiency.
From the development trend of the oil and gas wellhead, both at home and abroad, gusher well dual Completion Wellhead all can use two tubing in one well working in the meantime, improve production efficiency. For heavy oil well and old well later stage working, steam injection, water injection, injection pressure at the same time improve production efficiency, reduce production cost; For marine Wells, use combination valve can reduce the height of the wellhead, reduce occupied area, improve production efficiency.
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