New casing technology brings big benefits

This year, face low oil of severe situation, SHENGLI oilfield factory process Institute technicians for SHENGTUO oilfield wells casing damaged increasingly serious of status, concentrated research research, independent design out light tube injection wells casing protection tube column, through in reservoir above, and cement returned to high following parts added seal across device, will easy occurred casing damaged of injection layer segment above parts casing and injection parts segmentation, effective reduced injection shí water in the dissolved oxygen, and high salinity and the injection velocity, on casing of damaged.

In production process in the, WINS mining process by technicians found in used repair tubing finished wells shí, distribution water device, and sank sand late ball, Wells xià tool often due to rust scale, impurities jam and failure, injection validity up not to this class wells 3-5 years validity of requirements, only in full wells application new anti-corrosion tubing to guarantee its tube column validity, which led to has single wells cost sharply rose, only tubing a items will more inputs 80,000 yuan around.

In order to not increase cost of single well and  achieve light tube injection wells casing of effective protection, the process technicians light tube injection wells casing protection tube column for optimization, innovation developed out has set pressure type ball sat, replaced has original tube column in the of distribution water device and sank sand late ball, easy jam of tool, formed has only by seal across device and set pressure ball sat composition of no throttle, and big channel injection tube column. The tube column in seal across device zhī xià wells segment used repair tubing, does not due to jam and makes tube column failure, not only so, new developed of set pressure ball sat its structure simple, costs more sank sand late ball and distribution water device compared to single wells can save 2000 Yuan, by measuring, and full wells used new tubing of casing protection tube column compared to, average single wells can save job costs 93,000 yuan.

At present, the string in shengli oil extraction factory applied 12 times, have maintained a steady injection of State,only this small technical cumulative cost savings of more than 1 million Yuan, completely solve the restrictive oldcasing protection tubing high cost problems.http://sinorigs.net/