Research Progresses of Hydraulics for Extended Reach Drilling in China, Part I: Cuttings Transport and Precise Calculation of Pressure Loss

Xiao Le Guo; Zhi Ming Wang; Zhi Hui Long

doi:10.4028/www.scientific.net/AMR.524-527.1557

Paper Titles

Research of the Relationship between Characteristics of Carbonate Fracture-Cave Unit and Fluids Producing Status - A Case Study in Well Block ZG7 in North Slope of Tazhong Uplift
p.1537

Research on the Mechanical Advantage of Subsea Connector
p.1543

Research on the Mechanism of Potassium Silicate-Polyol Drilling Fluid
p.1548

Research Progresses of Hydraulics for Extended Reach Drilling in China Part II: Hole Cleaning Monitoring and Hydraulic Extended Limit
p.1553

Research Progresses of Hydraulics for Extended Reach Drilling in China, Part I: Cuttings Transport and Precise Calculation of Pressure Loss
p.1557

Research Progresses of Hydraulics for Extended Reach Drilling in China, Part III: Hydraulics Design Method and Risk Analysis System
p.1561

Simulation and Design for Bidirectional Hydraulic Control Check Valve of a Logging Instrument
p.1565

Simulation of Sand Production with a Coupled Seepage-Deformation-Damage Model
p.1569

Study of the Natural Gas Hydrate by Well Logging Method in MuLi Coalfield, Qinghai Province, China
p.1573

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Research Progresses of Hydraulics for Extended Reach Drilling in China, Part I: Cuttings Transport and Precise Calculation of Pressure Loss

Abstract:

The extended reach drilling (ERD) is being adopted widely as an effective and economical way of developing oilfields in China. But it also brought a series of technical difficulties because of its own characteristics. Some progresses were made after several years of hard work in China about Hydraulics for extended reach drilling, which included cuttings transport models and rules, precise model of circulating system pressure loss calculation, hole cleaning calculating models and monitoring method, hydraulic extended limit calculation model and analysis, hydraulics design and optimization method for ERD. Based on the above studies, the author finally developed a system of hole cleaning monitoring and hydraulics design and its risk analysis which could provide theoretical support and useful tool for engineering design and risk assess before drilling. These researches are helpful to ERD and have enriched the hydraulic theory of ERD. Due to space limitations, this article could only demonstrate part of these progresses, as the subtitle showed.