Shengli Offshore Fine Layering and Efficient Sand Control Technology is Internationally Advanced

Sinopec News.
com recently, at the project acceptance appraisal meeting organized by the Ministry of Science and Technology of Sinopec, the offshore oilfield fine-layered and efficient sand control technology research and application project undertaken by the Shengli Oilfield Petroleum Engineering Technology Research Institute passed the expert group's acceptance appraisal, and the project as a whole It has reached the international advanced level, among which the immovable pipe string squeezing and filling conversion and fast backwashing technology have reached the international leading level
.

In view of the problems of multiple layers, large spans, severe heterogeneity, and large oil well lifting hydraulic pressure differences and increased sand production in offshore oil reservoirs, researchers have launched the research and application of fine-layered and high-efficiency sand control technology in offshore oilfields, and innovatively researched and developed immovable pipe string squeezing.
Key mechanisms such as pressure and cyclic filling conversion, real-time large-displacement fast backwash well, downhole precise positioning and high-efficiency composite sealing, etc.
, form a one-way string dragging layered sand control process string
.
At the same time, scientific researchers have developed a multi-layer coated sand-mixed fiber consolidation system, a seawater online mixing variable viscosity sand-carrying liquid system and a bimodal erosion-resistant long-term sand control screen, which provides high-strength, high-permeability and long-term sand control in the formation layer.

Up to now, the results of the research project have been applied in the field 67 well times, with an average single well daily increase of 45.

(Ren Houyi and Gao Xuefeng)