本文關(guān)鍵詞： 水城礦區(qū) 煤層氣 儲(chǔ)層特征 儲(chǔ)層改造 水力壓裂　出處：《煤炭科學(xué)技術(shù)》2017年09期 　論文類型：期刊論文

【摘要】：為了系統(tǒng)評(píng)價(jià)六盤水煤田水城礦區(qū)煤層氣資源富集與開發(fā)條件,探索與薄-中厚煤層群發(fā)育條件相匹配的煤儲(chǔ)層改造與合層排采工藝,基于該礦區(qū)內(nèi)施工的3口煤層氣井資料,分析了礦區(qū)煤儲(chǔ)層物性、含氣性等特征,并結(jié)合工程實(shí)踐探索了與地質(zhì)條件相匹配的儲(chǔ)層改造工藝。研究表明:上二疊統(tǒng)龍?zhí)督M5-2煤、7煤、13-2煤具有單層厚度大、分布穩(wěn)定、煤體結(jié)構(gòu)完整、含氣量及資源豐度高、是區(qū)內(nèi)煤層氣開發(fā)的主力層位。在正常-超壓儲(chǔ)層壓力條件下,這些煤層含氣飽和度高、孔滲性較好,適宜對(duì)儲(chǔ)層改造后進(jìn)行煤層氣開發(fā)。在采用分層射孔條件下,以活性水為壓裂液、細(xì)-中粒石英砂為支撐劑,采用光套管泵注+可鉆式橋塞封隔方式及"大排量、分段階梯式加砂、多級(jí)段塞"工藝實(shí)施分層水力壓裂,煤儲(chǔ)層可取得良好的改造效果。
[Abstract]:In order to systematically evaluate the enrichment and development conditions of coalbed methane resources in Shuicheng mining area of Liupanshui coalfield, this paper explores the coal reservoir reconstruction and combined layer drainage technology matching the development conditions of thin and medium thick coal seam groups. Based on the data of three coalbed methane wells constructed in the mining area, the physical and gas-bearing characteristics of coal reservoir in the mining area are analyzed. Combined with engineering practice, the reservoir reconstruction technology matching geological conditions has been explored. The study shows that the 5-2 coal of Longtan formation of Upper Permian series has a large monolayer thickness and stable distribution. The coal body structure is complete, the gas content and the resources abundance are high, which is the main stratum of the coalbed methane development in this area. Under the normal pressure condition of the overpressure reservoir, these coal seams have high gas saturation and good porosity and permeability. Under the condition of stratified perforation, active water is used as fracturing fluid and fine-medium quartz sand is used as proppant. By adopting light casing pump drillable bridge plug sealing and "large displacement, step sand adding, multistage slug" technology to implement stratified hydraulic fracturing, the coal reservoir can be improved well.
【作者單位】： 中國地質(zhì)調(diào)查局油氣資源調(diào)查中心;中煤地質(zhì)工程總公司;
【基金】：中國地質(zhì)調(diào)查局地質(zhì)調(diào)查項(xiàng)目(121201021000150014,12120115008201)
【分類號(hào)】：P618.13;TE377
【正文快照】： 引用格式:畢彩芹,遲煥鵬,單衍勝,等.水城礦區(qū)煤層氣儲(chǔ)層特征及壓裂改造工藝研究[J].煤炭科學(xué)技術(shù),2017,45(9):182-187.BI Caiqin,CHI Huanpeng,SHAN Yansheng,et al.Analysis of coalbed methane reservoir characteristics and reconstruction process in ShuichengMining Ar，

本文編號(hào)：1452035