Results 91 to 100 of about 2,284,708 (212)

Wellbore Stability through Novel Catechol-Chitosan Biopolymer Encapsulator-Based Drilling Mud. [PDF]

Gels, 2022
Tang Z, Qiu Z, Zhong H, Kang Y, Guo B.
europepmc   +1 more source

Borehole inclination effects to the wellbore stability and sand production [PDF]

, 1995
The paper presents the result of a laboratory study of the wellbore stability and sand particles produced from unstable perforated wellbore. Section of a perforated wellbore were generated and exposed to various loads and conclusions were drawn with ...
A., Tzarina, S., Sharin, O., Norjusni, Samsuri, Ariffin, S., Surej Kumar   +4 more
core  

Chemical and thermal effects on wellbore stability of shale formations [PDF]

, 2002
textA new three-dimensional wellbore stability model is presented that takes into account thermal stresses and the flux of both water and solutes from drilling fluids (muds) into and out of shale formations.
Yu, Mengjiao
core   +1 more source

X-ray Computed Tomography (CT) to Scan the Structure and Characterize the Mud Cake Incorporated with Various Magnetic NPs Concentration: An Application to Evaluate the Wellbore Stability and Formation Damage. [PDF]

Nanomaterials (Basel), 2023
Faisal RS, Salih NM, Kamal I, Préat A.
europepmc   +1 more source

Elasto-Plastic Analysis on Wellbore Stability under the Condition of Permeation

, 2010
Maintaining the wellbore stability is a key factor for oil and gas drilling operations. In this paper, sock is regarded porous medium. Crevice pressure, effect of permeation and SD effect are considered.
Jian Bing Sang, Chen Hua Lu, Su Fang Xing, Wen Jia Wang, Bo Liu   +4 more
core   +1 more source

A Review of Drilling-Induced Risks in Gas Hydrate-Bearing Formations: Mechanisms, Control Strategies, and Numerical Models

Energies
Gas hydrate-bearing formations are characterized by low temperature and high pressure, weak cementation, strong phase sensitivity, and pronounced heterogeneity.
Lian Wang, Jiecheng Zhang, Zizheng An, Zheng Zeng, Chongzhi Lu, Yang Xiang   +5 more
doaj   +1 more source

Estimation of caving volumetric-flow using the ultrasonic Doppler Method

CT&F Ciencia, Tecnología & Futuro
Estimating the volumetric flow of cuttings and cavings that are extracted and transported by the drilling mud into the flow line while drilling a well is of major interest to for drillers so that they can understand the drilling conditions and maintain ...
Luis-Fernando Ramirez-Silva, Jenny-Mabel Carvajal-Jiménez, Ana B Ramirez   +2 more
doaj   +1 more source

Perforation parameters consideration for stable petroleum wellbore [PDF]

, 1997
The paper describes a series of laboratory experiment to observe the effects of perforation parameters and fracture zone on the wellbore stability.
Subbiah, Surej Kumar, Samsuri, Ariffin
core  

Effect of drill string lateral vibrations on wellbore stability and optimal mud pressure determination [PDF]

Wellbore instability is a critical issue in drilling operations, contributing to significant non-productive time and costly delays. While previous studies have focused on physicochemical and mechanical causes of wellbore instability, the effects of drill
Nermoen, Anders, Haghgouei, Hadi, Lavrov, Alexandre   +2 more
core   +1 more source

Numerical Simulation on the Influence of the Distribution Characteristics of Cracks and Solution Cavities on the Wellbore Stability in Carbonate Formation

Applied Sciences
The development of cracks and solution cavities in carbonate reservoirs can notably reduce the rock’s mechanical properties, leading to a severe wellbore collapse problem during drilling operations.
Jingzhe Zhang, Rongrong Zhao, Hongyi An, Wenhao Li, Yuxin Geng, Xiangyu Fan, Qiangui Zhang   +6 more
doaj   +1 more source