...., 2016). upstream oil & gas china government formula complex reservoir fracture deformation hydraulic fracturing probability wellbore sichuan basin magnitude wy23-5hf permeability shale reservoir calculation formula resistance cement sheath asia government shale gas...

... test of different proppants. The experimental results show that the conductivity of gas measurement is much greater than that of liquid measurement, and the former is about 12.6 times that of the latter. Related to the air permeability and water-resistance of the experimental film coating material...

... process. Based on the equations of friction resistance, a calculation method of vacuum section is proposed. Through the analysis of the casing force, a mathematical model for simulating casing deformation and calculating parameters such as displacement is established. The model is validated with data from...

... faces greater challenges. In this paper, the temperature resistance, retardation, and conductivity of the new cross-linking acid were evaluated by rotating disk instrument, Haake Mars III rheometer, and FCS-842 conductivity meter, respectively. The results show that the viscosity of the cross-linked...

... radius of the casing, and increases with the increase of the wellbore radius. In addition, with the increase of drilling fluid density, the wear depth of the upper casing increases, and the wear depth of the lower casing decreases. The casing collapse resistance after casing exterior wear is studied...

...) A large number of open hole keyways are formed because connectors grind cuttings bed and wellbore; (2) Serious local cuttings accumulation at the connectors because of axial motion. Based on the above analysis, the mechanical resistance coefficient is introduced to characterize the local resistance...

... and ensure smooth oil and gas production (Jordan et al., 2015; De et al., 2017; Hatambeigi et al., 2020; Valov et al., 2022). Cement has the disadvantages of high brittleness, poor corrosion resistance, and insufficient durability. Under the action of alternating load, micro-cracks and micro-annulus can...

... a dynamometer load cell. Overall test results were compared together. The results showed that a single-chamfer cutter performs best under the dry VTL test without coolant and generates a lower cutting force. The dual chamfer geometries showed a significant impact resistance without compromising other properties...

... the comprehensive performances of the novel system, such as temperature and shear resistance, friction reduction, gel breaking performance and core damage rate. The optimal formula of fracturing fluid was 54.3 wt.% weighting agent + 0.4 wt.% modified guar gum + 1.0 wt.% pH regulator + 0.5 wt.% crosslinker. Results...

... with the experimental data due to the existence of fitting parameters. 2) DCA deviates from equilibrium contact angle (ECA) more in capillaries with larger dimensions, which is due to the lower flow resistance and higher imbibition velocity. 3)With the decreases of the ECA, the deviation between DCA and ECA increases...

...-temperature resistance and cannot meet the site requirements, and the organic concentration of most polyacrylamide hydrogels is 0.6 wt% ~ 3.0 wt%, which further increases the economic cost of oil exploitation. In this work, organic zirconium is used to cross-link anionic polyacrylamide with large molecular...

... the length of the suction bucket. The large diameter will significantly increase the manufacturing cost and installation cost, with the increase of bucket length, it is difficult for the bucket to install due to the increase of soil resistance. Therefore, it is necessary to design the size of the bucket...

... efficiency teeth resistance tarim basin white application str716zx conical tooth tooth composition characteristic conference paper cutter strength ARMA 22 0158 Design and field application of large-size PDC bit in gravel layer in Tarim Basin Zhou Bo, Li Ning, Wang Shenglei, Zhou Bao, Liang...

... resistance, because of the principal of work minimization. The yield function is therefore an excellent way to predict the preferential path of HF growth. In the Duvernay, the bulk of the yield function appears to become more negative toward the top of the Upper Duvernay. This implies that the HFs which...

... discussed. The results showed that Changing area is in the reverse strike slip stress mode, and the difference between the shear stress and the sliding resistance on the fracture zone with high dip angle is the minimum, which is the internal reason why the fracture zone is easy to be activated. The sliding...

...ARMA 21 1661 Improved SPT-based Method for Axial Resistance Estimation of Steel H-Piles in Soft Rocks Adhikari, P. FDH Infrastructure Services, LLC, 6521 Meridien Drive, Raleigh, NC, USA Ng, K.W. and Wulff, S.S. University of Wyoming, 1000 E. University Ave, Laramie, WY, USA Gebreslasie, Y.Z. Arup...

... the resistance during casing running. At present, the research on the floating casing technology at home and abroad mainly considers the influence of the theoretical calculation of the position of the floating collar on the medium density in the pipe or the influence of the medium density in the pipe(Li and Li...

... textures. Our study shows the possibility of accurately predicting fracture roughness and fracturing resistance in layered rocks given detailed mineralogical information. 1. Introduction Brittle failure in rock is common in nature. Understanding the mechanics and physics of brittle failure are crucial...

... ABSTRACT: Rock scour evaluation procedures consider both the erosion capacity of flowing water and the resistance offered by the rock mass. The Block Scour Spectrum (BSS) provides a framework for assessing the rock mass resistance according to details of the discontinuity structure. This study...

...). Considering will develop to resist sliding motion along non-smooth these effects, the normal component of the COD in Eq. crack faces. To better understand the mobilization of (5) is modified to incorporate the crack closing stress c friction, let us treat the compressive stress state as a and a dilation...