白庙凝析气藏合理工作制度的研究及应用

The study and application of the reasonable work system for the condensate gas reservoir of Baimao

崔太华 陈峰 刘海涛 卢绪平 陈灿州 张俊红

Cui Taihua Chen Feng Liu Haitao Lu Xuping Chen Chanzhou Zhang Junhong

中国石油化工股份有限公司中原油田分公司采油六厂, 山东东明 274511; 中国石油化工股份有限公司中原油田分公司人力资源处, 河南濮阳 457001

No.6 Production Factory of Zhongyuan Oilfield, SINOPEC, Dongming 274511, China; The Human Resource Department of Zhongyuan Oilfield, SINOPEC, Puyang 457001, China

白庙凝析气藏地质构造复杂,砂体发育纵横向变化大;气层埋藏深,储层低孔、低渗,地露压差小;气井产能低,且稳产难度大,中后期普遍出现积液,严重影响气井正常生产。自1987年6月投入试采以来,一直采用逐层上返的衰竭式开发。由于凝析气藏开采工艺技术要求高,于2000年才投入正规开发,开发效果一直不理想,2002年自然递减率高达27.45%,2003年自然递减率为26.98%。为此,从2004年开始,开发工作人员研究并优化出了一套适合白庙凝析气藏合理开发的工作制度,将白庙凝析气藏自然递减率有效控制在2004年的19.13%,使白庙凝析气藏开发工作步入了良性开发,同时也为国内外同类凝析气藏的开发提供参考。

The geology structure is complicated in the condensate gas reservoir of Baimao, the lengthways and horizontal variety of the sand body growth is big. The reservoir buries deeply, porosity and penetration coefficient is low, the geologic strata pressure and the dewdrop differential pressures are small, so the well productivity is low and it's hard to get steady production. Since the well has entered into medium period, the water content increases, and influences normal production seriously. Because the technique request of the condensate gas reservoir is high, 14 years passed, it just entered in the regular development period in 2000. The development result was not ideal, natural decrease was up to 27.45% in 2002 and 26.98% in 2003. Since 2004, the staff developed a set of the reasonable work system for the condensate gas reservoir of Baimao, slowed down its natural decrease effectively, which decreased from 26.98 % in 2003 to 19. 13 % in 2004, and brought the condensate gas reservoir of Baimao into good development. At the same time it also provides the reference for similar condensate gas pool development at home and abroad.