For a long time, the cementing industry has generally adopted the method of cementing the cementing tools on the joint surface of the joint section. With the continuous development of drilling technology in Dagang Oilfield, the use of batch drilling to speed up petroleum engineering is imminent. In order to shorten the cementing cycle and reduce the cementing construction intensity, Dagang Oilfield Group Cementing Technology Service Co., Ltd. has started the project “Research on Integrated Technology of Ending Island without Drilling Cementing†since the end of 2006. After nearly one year of research and implementation, the project has been successfully tackled, and its supporting project “Fast Wellhead Device for No-Drilling Cementing†has obtained national practical technical patents.
"Fast-filled wellhead device for drilling-free cementing" successfully solved the need of manual tightening and raising short joints and cementing cement heads during cementing construction. It has high labor intensity, difficult to buckle, extremely easy to damage the thread buckle, and the degree of tightening is also It is difficult to control, the pressure bearing capacity of the thread can not be guaranteed, and the construction safety hazard is large, which provides technical support for ensuring the safety of cementing construction and shortening the drilling cycle.
From the beginning of 2007 to the present, "Tiandao No-drilling Cementing Comprehensive Supporting Technology Research" has been successfully implemented in the Bohai No. 1 artificial island, and a total of 19 wells have been cemented, which has proved the advanced and effective technical solutions. feasibility.
Plastic Injection Insert Molding
1. The combination of the easiness of molding and bending of resin and the rigidity, strength and heat resistance of metal can make complex and sophisticated metal-plastic integrated products sturdily.
2. In particular, the combination of the insulation of resin and the electrical properties of metal can meet the basic functions of electrical products.
3. The pre-forming combination of multiple inserts makes the post-engineering of product unit combination more reasonable.
4. Insert products are not limited to metal, but also cloth, paper, wire, plastic, glass, wood, wire ring, electrical parts and so on.
5. For rigid parts and flexible parts on rubber sealing pad, the complex operation of arranging sealing ring can be eliminated after the integrated products are made by injection molding on the matrix, which makes the automatic combination of the following process easier.
6. Because it is the fusion of molten material and metal insert, compared with the pressing molding method, the metal insert gap can be designed to be narrower, and the reliability of composite product molding is higher.
7. Suitable resin and molding conditions may be used for sealing and fixation of susceptible products such as glass, coils, electrical parts, etc.
8. Inserts can also be completely sealed into the resin by selecting the appropriate mold construction.
9. After the insert is molded, it can also be made into a product with hollow grooves along with the core hole.
10. The combination of vertical injection molding machine and manipulator, the whole row device of insert products, etc., the insert forming engineering can be mostly automated production.
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