Optimization of Horizontal Well Parameter Based on Orthogonal Test Method

DONG  Jia-Xin, TONG  Min, ZHANG  Jin, ZHU Li-Yao, YUAN  Da-Wei

doi:10.11764/j.issn.1672-1926.2012.03.584

Natural Gas Geoscience >

2012 , Vol. 23 >Issue 3: 584 - 589

DOI: https://doi.org/10.11764/j.issn.1672-1926.2012.03.584

Optimization of Horizontal Well Parameter Based on Orthogonal Test Method

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1.Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China;
2.INT Mudlogging Dept of GWDC,Beijing 100010,China

Received date: 2011-12-31

Revised date: 2012-05-02

Online published: 2012-06-10

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Abstract

In making sensitivity analysis of productivity parameters in horizontal wells,the traditional analysis usually focus on the influence of the individual parameter,and little compare the different parameters to influence of horizontal well productivity,thus the influence of the parameter combination on the horizontal well productivity is ignored. In this paper,we use the orthogonal test method to illustrate the influence of productivity parameters in horizontal wells and identify the order of each influential factor from strong to weak as follows:Horizontal permeability Kh(A),effective thickness h(C),length of the horizontal sector L(B),viscosity of the underground gas μ(E),anisotropy coefficient β(D),Z-factor of natural gas Z(G),and formation temperature T(F). The optimal productivity parameters assemblage of horizontal wells is A5B5C4D1E1F4G2. In combination with result of comprehensive variance and data from CL and LS gas field,the prominent influential factors of horizontal well productivity are length of the horizontal sector,horizontal permeability,and effective thickness.

Key words： Horizontal well; Productivity; Parameters; Influence degree; Orthogonal test method.

Cite this article

DONG Jia-Xin, TONG Min, ZHANG Jin, ZHU Li-Yao, YUAN Da-Wei . Optimization of Horizontal Well Parameter Based on Orthogonal Test Method[J]. Natural Gas Geoscience, 2012 , 23(3) : 584 -589 . DOI: 10.11764/j.issn.1672-1926.2012.03.584

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