Research On Optimization Design Of Casing Centralizer

The cluster well group has become the main development well, directional well, extendedreach well and horizontal well are more and more applications, development of cementingquality requirements of more and more importance. Improve the cementing quality measures, thefirst thing to consider is how to ensure the optimization of casing pipe, casing centralizerplacement study has important significance. However, instead of using the casing centralizernumber more cementing quality is higher, because excessive casing centralizer can not onlyincrease the casing stiffness hinder smoothly into the well casing, but also increase the cost ofwell cementing. Extraction technology is the key to correct selection of casing centralizer typeand optimizing installation spacing, lay a good foundation for well cementing.In the light of predecessors on the basis of research results, and seriously research the twocasing centralizer casing between axis in one-dimensional, two-dimensional andthree-dimensional flexure deformation, considering the density difference and internal andexternal casing initial bending deformation and other factors, combined with China’s petroleumindustry standards for the establishment of a more practical continuous beam structure the modeland the calculation formula is given. In order to more accurately determine the casingcentralizers of casing pressure and axial force, and also the analysis of the bushing frictionmodel, hope for installing casing centralizer casing well in providing theoretical support.Combined with practical engineering needs, using the c#programming language design thesoftware of casing centralizer installation spacing optimization. Software of centralizerinstallation spacing foundation design, centralizer installation spacing optimization design andinstallation space checking module, it can be used in engineering design.