Weight Distribution Characteristics During the Process of Hole Enlargement When Drilling

Jiang, Jun; Lu, Yiyu; Zhu, Xiaohua; Dai, Liming; Liu, Weiji

doi:10.1007/s13369-018-3233-z

Cited by 4 publications

(1 citation statement)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To date, a number of devices have been designed to expand the diameter of the well in a certain interval. Usually, drilling tools operate in aggressive and abrasive environments under the action of intense loads, so their performance is subject to special requirements [13,14]. This issue is especially significant for tools used for difficult technological operations.…”

Section: Introductionmentioning

confidence: 99%

A Technology of Hydrocarbon Fluid Production Intensification by Productive Stratum Drainage Zone Reaming

et al. 2021

View full text Add to dashboard Cite

The paper proposes a new technology for fluid production intensification, in particular hydrocarbons, which is implemented via significant increasing of the local wellbore diameter in the interval, where the productive stratum is present. The proposed technology improves the well productivity by increasing the filtration surface area and opening new channels for filtering fluids into the well. The innovative, technical idea is to drill large diameter circular recesses in planes perpendicular to the well axis. After that, the rock mass located between the circular recesses are destroyed by applying static or dynamic axial loads. The required value of the axial force is provided by the weight of the standard drilling tool. As a result of the study, the analytical relations to specify the admissible radius of circular recesses and admissible thickness of rock mass between two adjacent circular recesses from the condition of safe operation are obtained. The numerical analysis carried out for typical reservoir rocks substantiated the possibility of well diameter local reaming twenty times. A special tool for circular recess drilling is developed and the principle of its operation is described. The advantage of the proposed approaches is the low energy consumption for well diameter reaming. Our technology will have special economic expediency for the intensification of production from hydrodynamically imperfect wells and under the condition of fluid filtration according to the expressed nonlinear law.

show abstract

Section: Introductionmentioning

confidence: 99%