（WO）——中国石油化工股份有限公司（“中国石化”）巴中气田一期发现的30.55 Bcm天然气探明地质储量获得正式认证，这是中国石化深地四川工程的重大突破重庆天然气基地进一步揭示了川东北地区致密砂岩的良好潜力。
巴中天然气田是中国石化在该地区发现的第三个须家河组致密砂岩气田。截至目前，中国石化已提交该地区致密砂岩气探明地质储量共计154747MMcm。
埋藏深度超过4500 m的砂岩气藏被定义为超深层致密砂岩气藏。巴中天然气田埋深4550～5225m，勘探开发面临挑战。
中国石化创新三类优质储层及渗透率开发模式，明确天然气富集高产模式，建立储层预测技术序列，实施富集高产区。
下一步，中国石化将继续攻克四川盆地致密砂岩页岩气储量地质评价及工程化进程，扩大巴中地区储量规模。
(WO) – China Petroleum & Chemical Corporation ("Sinopec") has received official certification for the 30.55 Bcm proven geological reserve of natural gas discovered in phase-I of its Bazhong gas field, a significant breakthrough of Sinopec's Project Deep Earth-Sichuan and Chongqing natural gas base that further reveals favorable potential of the tight sandstone in northeast Sichuan, China.
The Bazhong natural gas field is the third Xujiahe Formation tight sandstone gas field discovered by Sinopec in the region. As of now, Sinopec has submitted a total of 154,747 MMcm of proven geological reserves of tight sandstone gas in the region.
The sandstone gas reserve with a burial depth of over 4,500 m is defined as an ultra-deep, tight sandstone gas reservoir. The burial depth of the Bazhong natural gas field ranges from 4,550 to 5,225 m, which is a challenge for exploration and development.
Sinopec has innovated three types of high-quality reservoir and permeability development models to clarify natural gas enrichment and high-yield production models, established reservoir prediction technique sequences, and implemented enriched high-yield zones.
Next, Sinopec will continue to tackle the geological evaluation and engineering process of the tight sandstone shale gas reserves in the Sichuan basin to expand the scale of reserves in the Bazhong region.