Study On Horizontal Well Cementing Technology In Dense Reservoir

Dense oil reservoir in Jilin oilfield, the early with small and uncased hole sliding sleeve drilling and completion integration technology development has achieved good results, in order to improve the productivity of single well tight reservoir, the reference of foreign multi cluster fracturing technology, will improve the production technology in horizontal well fracturing test multi cluster well cementing. Multi cluster fracturing need level section adopts the cementing and completion mode, high requirements for cementing quality and cement properties, but because of the difficulty of construction cementing of long horizontal section, especially the horizontal section construction of high pressure volume reconstruction, cementing quality and high impact strength, at present the cementing quality long horizontal wellbore is a bottleneck for many cluster fracturing implementation effect.To prevent the horizontal section top appear micro gap through the topic using fiber and expansive agent micro expansion performance can improve the interface bonding strength, two; characteristics of fiber toughening properties of cement ring for subsequent volume change provides excellent mechanical properties. The fiber and expansive agent into the comprehensive performance of cement slurry to improve cement slurry and cement stone, complete the toughness of expansion of R & D channeling cement slurry system, and find the fracturing pressure and cementing quality and integrity rules.Cement slurry system is again good also to have the cementing technology supporting to match play the advantage of using floating field cementing technology ensure the displacement efficiency and the use of cementing technology of vibration of the cement slurry performance and further improve, further improve the cementing quality and cementing quality, and the scene into a power construction, the cementing quality to meet the requirements of volume fracturing.