低渗块状砂岩气藏底水锥进的定量化预测

Quantitative Prediction of Botton Water Coning in Low Permeability Block-sand Gas Reservoir

陈清华¹,周　游¹,王周红²,杜　利¹

Chen Qinghua, Zhou You, Wang Zhouhong, et al

1. 中原油田分公司勘探开发科学研究院,2. 中原石油勘探局测井公司

Scientific Research Institute of Petroleum Exploration and Development , Zhongyuan Oilfield Company , SINOPEC, Henan 457001 , P. R. China

在低渗块状砂岩气藏开发过程中,由于水的侵入,产气量降低甚至停产。以东濮凹陷具有边、底水的文23 气藏为例,用允许生产压差法和临界产量法计算其合理生产压差及产量,在合理产量下,计算底水锥进的时间,指导气藏的开发,避免水锥突破造成的气井水淹。

In the development of low permeability block-sand gas reservoir , due to water in sursion , the production decreases. The paper gives the example of Wen 23 gasreservoir with edge and botton water in Dongpu depression. By using permise production pressure difference and critical production method , it can calculate the rational production pressure difference and production. Under the rational production ,it can calculate the botton water coning time , guide the gas reservoir development and avoid water coning surge and gas well water out .