›› 2017, Vol. 38 ›› Issue (6): 1-1.doi: 10.7657/XJPG20170619

• 论文 •    

动静态资料在碳酸盐岩储集层类型识别中的应用——以塔里木盆地哈拉哈塘油田金跃区块奥陶系为例

代飞旭1a,朱柏宇2,邓伯龙1b,刘源1c,韩宇3,肖华1a   

  1. (1. 中国石油 塔里木油田分公司 a.塔中油气开发部;b.开发事业部;c.油气工程研究院,新疆 库尔勒 841000; 2. 西南石油大学 地球科学与技术学院,成都 610500;3.中国石油 青海油田分公司 第二采油厂,甘肃 敦煌 736200)
  • 出版日期:2019-01-01 发布日期:1905-07-18

Application of Static and Dynamic Data in Identification of Carbonate Reservoir Type: A Case Study from Ordovician Strata in Jinyue Block of Halahatang Oilfield, Tarim Basin

DAI Feixu1a, ZHU Baiyu2, DENG Bolong1b, LIU Yuan1c, HAN Yu3, XIAO Hua1a   

  1. (1.PetroChina Tarim Oilfield Company, a.Middle Tarim Oil & Gas Development Department; b.Development Department; c.Oil and Gas Engineering Research Institute, Korla, Xinjiang 841000, China; 2.School of Geoscience and Technology, Southwest Petroleum University, Chengdu 610500, China; 3.No.2 Oil Production Plant, Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu 736200, China)
  • Online:2019-01-01 Published:1905-07-18

摘要: 根据哈拉哈塘油田金跃区块及邻区单井动静态资料,综合分析了不同储集层储集空间类型在动静态资料上的响应特征,提出了定量、定性划分标准,建立了识别模板,分析了研究区储集层分布规律。分析认为,洞穴型储集层相对于裂缝-孔洞型储集层,钻井液漏失量较大,表现为失返特征;酸压过程中,泵压压降大,停泵压力低,停泵压降曲线呈水平直线型,酸液返排率低;试采资料上来看,初期油压高,日产液量大,递减缓慢,地层能量较充足,自喷采油期长。根据其洞穴组合,洞穴型储集层可划分为单洞型和多洞型2种,多洞型储集体具有多个缝洞连通,压降—累计产液量曲线呈多段直线,且各直线斜率不同,产量呈多段式递减,压力导数曲线上呈现多个“凹子”特征;单洞型储集体压降—累计产液量曲线呈直线,油压与日产油量随着天然能量下降而下降,压力导数曲线在径向流段后上翘。

Abstract: Based on the the static and dynamic data from single wells in Jinyue block and its neighboring areas of Halahatang oilfield, the paper analyzes response characteristics of different reservoir space types on the static and dynamic data comprehensively, presents quantitative and qualitative classification standards, establishes identification templates and analyzes reservoir distribution in the study area. It is considered that compared with fracture-vuggy reservoir, the leakage of drilling fluid in cavernous reservoir is relatively large, showing a non-flowback feature; during acid fracturing, pump pressure drop is large, pump stopping pressure is low, the pressure drop curve is a horizontal line when pump stops and the flowback rate of acid liquid is low. The production test data shows that the tubing pressure is high with high daily liquid yield and slow decline, and sufficient formation energy allows a long oil flowing production period at the early stage. According to cavity assemblage, cavernous reservoir can be divided into 2 types, i.e., single cavity and multi-cavity reservoirs. Multi-cavity reservoir has multiple connected fractures and cavities, its pressure drop vs. cumulative liquid production curve exhibits multisegments of straight lines whose slopes are different; the yield shows a multi-stage decline and the pressure derivative curve shows multiple concave shapes. For single-cavity reservoir, the pressure drop vs. cumulative liquid production curve is a straight line, the tubing pressure and daily oil production reduce with the decline of natural energy and the pressure derivative curve goes upward after radial flow stage.

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