...) are essential for successful well drilling operations in challenging environments, offering superior lubricity, wellbore stability, and inhibition compared to water-based alternatives. However, optimizing their performance, particularly under high-pressure high-temperature (HPHT) conditions, necessitates...

... reinforcement techniques. Formation (C) Application Challenges The project presented several complex geological and operational challenges that required innovative solutions and careful planning. Abstract Wellbore stability, stuck pipe, trajectory control, drilling vibrations, downhole tools...

... for selecting optimal drilling fluids and maintaining wellbore stability under high pressure conditions. Figure 1 Pressure-depth profile of reference well and development wells on platforms SA-1 and SA-2, illustrating the pressure increase upon entering the middle Cycle D. Furthermore, analysing...

... The low permeability reservoir has the characteristics of large buried depth, high temperature, large lithologic change and high stress field, which leads to the inaccurate drilling mud density window based on the conventional wellbore stability analysis, resulting infrequent instability of the wellbore...

... Abstract The objective of this paper is to examine the quantification effect of clay content on wellbore stability. Clay Content is known to have direct impact on hydrocarbon petrophysical modeling. The major factor to quantify clay content is to acquire spectral gamma ray logs. Utility...

... wellbore stability and avoid stuck pipe events in problematic formations. Offshore field trials exhibited 50% fewer sticking events, 30-40% faster ROP, and no wellbore instability issues through problematic shales with the use of NWBM. The integrated results highlight the NWBM's technical advantages...

...INTRODUCTION ABSTRACT Drilling a wellbore into a clastic reservoir exhibits complex rock behavior, including plastic deformation and yield zone development, which can affect wellbore stability and hydrocarbon production efficiency. Elastoplastic modeling methods have been increasingly used...

... caused by applying low mud weight, while tensile failure is caused by applying high mud weight. Various methodologies are available for the prediction of rock failure and its consequent impact on wellbore stability. Among these, the most prevalent failure criteria are the Mohr-Coulomb criteria, used...

... engineering of the drilling program. The selection and modification of drilling fluids can also play a crucial role in maintaining wellbore stability. Proper wellbore sizing and design, considering the anticipated downhole conditions, is essential in preventing instability. If a stuck pipe occurs...

... in saline aquifer include the well injectivity, storage capacity, storage efficiency, wellbore stability and caprock integrity. Injectivity characterizes how fast the CO 2 can be injected into the aquifer, which is directly related to the formation permeability. Storage capacity indicates the maximum...

.../fractures all increase the risk of wellbore collapse and instability. Based on the pore elasticity and single structural plane strength theory, this paper establishes a mechanical analysis model for the wellbore stability of horizontal wells in layered shale to analyze the effects of bedding plane...

... deviated well was faced challenges associated with complex geologic conditions: ① How to optimize the trajectory of highly deviated well to penetrate permeable fractures? ②How ensure the wellbore stability during drilling? ③ How to optimize fracturing stimulation program after drilling? To demonstrate...

... ready for the cement job. While conventionally, casing still needs to be run with associated time and risks (losses, wellbore stability, stuck casing, accidental side-track, etc…). This Directional-CwD was a new concept to most of the teams involved: Operator, Rig contractor and Tubular Running...

.... Reservoir Geomechanics approaches, this paper address and answer the following questions: How Geomechanics changes in stresses and strain impact wellbore stability related issues and stimulation operations? Stress rotation around faulted zones. How depletion effect hydraulic fracture growth...

... Abstract Mud weight optimization is a key driver in attaining optimum wellbore stability while drilling horizontal wells. This paper demonstrates the role of geomechanical knowledge prior to and while drilling to address wellbore stability related issues to help reduce drilling risk and non...

... fluid selection and formulation drilling fluid property drilling fluids and materials drilling fluid formulation Upstream Oil & Gas wellbore stability chloride concentration concentration salt formation mud weight NAF complex salt formation incident divalent complex salt formation...

.... The plastered filter cake prevents stuck pipe and lost circulation, improves wellbore stability, and reduces the formation damage caused by filtrate invasion. Casing Drilling has proven to be a reliable option to eliminate drilling problems. It saves time, cost, and the frustration of unplanned events. It also...

.... Mechanical Earth Models based on an isotropic mechanical property assumption were then constructed using mainly well logs and data extracted from the drilling and completions reports. Wellbore stability analyses were conducted for the stuck pipe and non-stuck pipe wells which demonstrated that extensive...

... drilling performance wellbore integrity drilling operation information machine learning well design upstream oil & gas exxonmobil upstream research co wellbore design modeling mud weight wellbore stability probability iptc 10709 drilling program drilling fluid management & disposal...

... Abstract This paper discusses the most important drilling hazards related to borehole instability and pore pressure in deep water wells. A case study from a deep water well, which has experienced wellbore stability and loss of circulation problems, especially over intervals with higher angles...