... loss control completion installation and operations modeling & simulation drilling fluid management & disposal production control spe drilling production monitoring paper experiment efficiency wellbore correlation irregularity fiber drilling fluid selection and formulation...

... of the cement-formation interface. Our findings highlight the need for more explicit considerations regarding the impact of cementing technology and actual operation on the HSC of an interface under the requirements of efficient production and extended well life. 23 5 2022 24 8 2022 5 8 2022...

..., and technical publications. MSE, used as a metric for drilling efficiency, is a mathematical calculation of the energy used per volume of rock drilled. The downhole MSE equation calculates the efficiency of the bit alone, while the total MSE equation includes both the bit and drillstring. Those who use MSE...

... specifically, the study will focus on micronized ilmenite and various sizes of barite particles. This paper will also present solubility results to demonstrate the efficiency of micronized ilmenite-weighted filter-cake cleanup. Damage mitigation and minimization require particular attention to solid...

...) and breaking area, the penetration and rock-breaking area of the chord-edge cutter are studied, which clarifies that the rock-breaking efficiency of the chord-edge cutter is higher than that of the conventional cutter. The first part of the laboratory experiment investigated the drilling efficiency of two mini...

... characteristics of the formations (such as gravel, sand, pea, etc.) as well as the physicochemical properties of the heavy crude oil. In this work, we propose a hole cleaning formulation that can solubilize the asphaltenes present in Mexican heavy crude oil and that is also efficient in eliminating the accretion...

...Chen Wei; Yuanhang Chen Summary Improved numerical efficiency in simulating wellbore gas-influx behaviors is essential for realizing real-time model-prediction-based gas-influx management in wells equipped with managed-pressure-drilling (MPD) systems. Currently, most solution algorithms for high...

...Rui Zheng; Yong Li; Jian-Zhou Jin; Zi-Shuai Liu Summary Effective removal of mudcake from the wellbore before cementing is critical to developing an excellent bond between cement and formation. The application of spacer can remove mudcake effectively. The evaluation of mudcake removal efficiency...

... techniques: explicit integration scheme, Ogden second-order hyperelastic constitutive model for the elastomer, and the selection of appropriate values for element sizes and other modeling parameters. After resolving the convergence issues, we used the model to study the sealing efficiency and material...

... trap) such as the gas concentration in the mud, stirring velocity, mud-flow rate and temperature, and ditch-line flow rate and pressure are studied to maximize the gas-extraction efficiency in the gas trap. The operating conditions that most affect the gas-extraction efficiency are the stirring...

... and significantly adds to the operational cost. This study is aimed at developing a model to predict the required fluid‐circulation rate and time to efficiently remove solids from the wellbore and optimize the cleanout operation. To study the hole‐cleaning mechanism, solids‐bed‐erosion experiments were conducted...

... cake formed by barite drilling fluid using a high-pressure/high-temperature (HP/HT) cell. Filter-cake removal was conducted for filter cakes formed by both water- and oil-based drilling fluids. The results of this study show that the barite-removal efficiency of the new formulation is 87% for water...

...-tested under controlled conditions. Details from laboratory testing and field-test results are presented. To understand the effects of local design variables on bit drilling efficiency, efforts were focused on the development of a single cutter-force model. Most of the single-cutter force models...

...Joy Oyovwevotu; Eric Low; Steve Nas Summary As the industry pushes the boundary of technology to drill narrow-margin wells, combining safe drilling practices with drilling efficiency is becoming ever more challenging. The practice of drilling with managed-pressure drilling (MPD) by use...

... of this technology evolved, and fracture-placement efficiencies were improved. Horizontal openhole multistage (OHMS) fracturing technology was initially developed and deployed in the early 2000s (Seale et al. 2006 ; Seale 2007 ). This technology allowed for the mechanical isolation of zones along the wellbore...

... rotation march 2014 drillpipe concentration viscosity Efficiency fraction thermal conductivity university suspension wellbore During drilling operations, ensuring proper hole-cleaning conditions is extremely important. Otherwise, serious drilling problems can occur such as stuck-pipe...

.... Essential frac-pack design parameters that were attained from the step-rate test (SRT) and minifrac test are evaluated. These include bottomhole pressure, rock-closure time, and fracturing-fluid efficiency. Downhole pressure and temperature are also discussed because of their importance to the post...

... and for the resulting acid to dissolve calcium carbonate particles. All experiments showed that in controllable conditions of temperature, acid concentration, and particle size, the cleanup efficiency exceeded 70%. The optimum particle size was found to be 50 μm for calcium carbonate and 150 μm for PLA. The optimum...

... swelling produces on drilling performance, two major chemical solutions were defined in the past: OBM ( Santarelli 1992 et al. ), or redefined-chemistry WBM ( Santos et al. 1998 ). The drilling efficiency while drilling across reactive, time-dependent shale is still questionable, however...

... of the MSE consistently showed that increases in the confining pressure as small as 150 psig can increase the MSE of the cutting process significantly and reduce the cutting efficiency by half. These reductions in the cutting efficiency that were even more dramatic in the permeable and saturated Indiana...