复杂注水井管柱通常由三个以上的封隔器和配水器组成,由于编写施工方案时无法预知现场油管实际情况。施工方案只能提出井下工具的最终深度,注水井管柱的组配工作由现场技术员完成。受油管长度、油层厚度、测量误差等因素影响,很容易因计算错误造成返工,给现场技术人员造成极大心理负担。本文主要介绍了复杂水井管柱组配数学实质、数学算法、计算机算法等三个方面。 Complex water injection well string usually consists of more than three packer and water distributor, due to the preparation of the construction program can not predict the actual situation of the field tubing. The construction scheme can only propose the final depth of the downhole tools. The assembly work of the injection well string is completed by the field technician. Affected by factors such as tubing length, reservoir thickness, measurement error, etc., it is easy to cause rework due to calculation errors, posing a great psychological burden to on-site technicians. This article mainly introduces the complex water well pipe column with mathematical essence, mathematical algorithms, computer algorithms and other three aspects.