[1]李彥尊  李相方  徐 敏  武文濤  張曉舟.頁巖氣藏產量遞減預測模型研究及應用[J].石油鉆采工藝,2015,37(6):074-77.[doi:10.13639/j.odpt.2015.06.018]
 LI Yanzun,LI Xiangfang,XU Min,et al.Production decline prediction modelling and application in shale gas reservoir[J].Oil Drilling & Production Technology,2015,37(6):074-77.[doi:10.13639/j.odpt.2015.06.018]
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頁巖氣藏產量遞減預測模型研究及應用
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《石油鉆采工藝》[ISSN:1000-7393/CN:13-1072/TE]

卷:
37卷
期數:
2015年6期
頁碼:
074-77
欄目:
油氣開采
出版日期:
2015-11-20

文章信息/Info

Title:
Production decline prediction modelling and application in shale gas reservoir
文章編號:
1000 – 7393( 2015 ) 06 – 0074 – 04
作者:
李彥尊1  李相方1  徐 敏1  武文濤2  張曉舟1
(1. 中國石油大學(北京)石油天然氣工程學院,北京 102249;2. 遼河油田塔里木項目管理部,遼寧盤錦 124010)
Author(s):
LI Yanzun1 LI Xiangfang1 XU Min1 WU Wentao2 ZHANG Xiaozhou1
(1. Oil and Natural Gas Engineering College, China University of Petroleum, Beijing 102249, China;
2. Liaohe Oilfield Tarim Project Management Department, Panjin 124010, China)
關鍵詞:
頁巖氣壓裂水平井產量遞減滲流模型產能預測
Keywords:
shale gas reservoir multi-fracture horizontal well production decline flow model procuction prediction
分類號:
TE37
DOI:
10.13639/j.odpt.2015.06.018
文獻標志碼:
A
摘要:
頁巖氣藏普遍采用水平井體積壓裂方式開發,壓裂體積是影響氣井產氣特征的重要因素。在實際開發中,由于儲層非均質性等影響,各壓裂段壓裂體積各不相同。為研究壓裂體非均勻展布對產能遞減規律的影響,根據頁巖氣滲流特征,在水平井滲流模型的基礎上,引入壓裂體大小及分布等表征參數,建立了頁巖氣藏非均勻壓裂水平井滲流模型,并繪制了產能遞減曲線。同時根據典型產量遞減曲線劃分了流動階段,分析評價了不同壓裂體展布類型下產量遞減曲線特征。研究表明壓裂體的展布特征主要影響產氣量及線性流階段曲線特征;非均勻壓裂造成水平井產氣量較少、早期線性流持續時間較長。結合壓裂數據,提出了氣井產量預測方法并進行了實例計算。
Abstract:
Shale gas reservoir is usually developed by multi-fractured horizontal well, and stimulated reservoir volume dominates the gas rate as the main factor. For the heterogeneity of formation, both size and distribution of each fracturing area are not uniform. To investigate effect of heterogeneous fracturing on rate decline of multiple fractured horizontal well in shale gas reservoir, by introducing the parameters of different stimulated area’s size and location in equations, a mathematical model based on horizontal well flow equations is established. Analytical solution and rate decline curve for model are presented then. The flow regimes are divided in gas rate dechlin curve, and curves characters of different un-uniform fracturing types are analyzed. The result shows that heterogeneity of fracturing affects production rate and linear flow stage. With more heterogenous of fracturing, the gas rate becomes fewer and duration of linear flow period is longer. Example analysis shows that the model can be used for production prediction of multiple fractured horizontal wells. This approach provides a theoretical basis on production flow decline prediction.

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