新疆H型储气库注采气能力评价方法  

A Method for Assessing the Gas Injection- production Capacity of H- shaped UGS in Xinjiang Oilfield

作　　者：王彬[1] 陈超[1] 李道清[1] 崔国强[1] 庞晶[1] 

机构地区：[1]中国石油新疆油田分公司,新疆克拉玛依834000

出　　处：《特种油气藏》2015年第5期78-81,154,共4页Special Oil & Gas Reservoirs

基　　金：国家科技重大专项"地下储气库地质与气藏工程关键技术研究与应用"(2015E-4002)

摘　　要：新疆H型储气库是目前中国最大的地下储气库,其注采气能力评价方法具有一定代表性。依据新疆H型气藏特点,采用节点分析法来评价储气库气井的注采能力。利用地层临界出砂压差、冲蚀流量、临界携液流量、地层破裂压力和地面压缩机额定功率来分别约束气体流入和流出方程,通过二者协调点确定气井的合理注采气量。研究表明：新疆H型储气库应采用11.43 cm油管,合理采气量为50×104～118×104m3/d,合理注气量为48×104～160×104m3/d。该研究为合理选择完井油管尺寸和控制不同注采周期中的井口压力提供参考。The H- shaped gas storage in Xinjiang oilfield is the largest underground gas storage( UGS) in China up to now,and the assessment method of its gas injection- production capacity has certain representativeness. Based on the characteristics of H-shaped gas reservoir in the Xinjiang oilfield,nodal analysis method was adopted to assess the injection- production capability of gas wells of the UGS. The critical sanding differential pressure of formation,erosion flow rate,critical fluid carrying flow rate,formation breakdown pressure and rated power of surface compressor were used to constrain the gas inflow and outflow equations respectively,and the coordinating point of them was used to confirm the rational gas injection- production volume of gas wells. The study results showed thatФ 11. 43 cm tubing should be adopted in the H- shaped UGS of the Xinjiang oilfield,with rational gas withdrawal rate of50 × 104- 118 × 104m3/ d and rational gas injection rate of 48 × 104- 160 × 104m3/ d. This study has provided references for the rational selection of completion tubing size and the control of wellhead pressure in different injection- production cycles.

关 键 词：节点分析 采气能力 注气能力 冲蚀流量 携液流量 评价方法 新疆H型储气库 

分 类 号：TE328[石油与天然气工程—油气田开发工程]