... that there is a tendency to obtain higher maximum loads using smaller diameters, as shown in figure 1 (Tompson et al. 1999). geologist split set application installation geology maximum load resistance brazil government diameter anchor cement strength load capacity interface non-grouted test result...

... with rising temperature due to the gaseous CO 2 in the submerged environment, resulting in reduced resistance. The erosion effect is influenced by the characteristics of the jet. At 2.5-5MPa, the CO 2 in the submerged environment undergoes a phase transition from gaseous to liquid. At 5-10MPa, the erosion...

... ABSTRACT Polycrystalline diamond compact (PDC) is widely used in petroleum engineering drilling due to its strong wear resistance, fast penetration rate and high bit footage. But with the increase of formation depth, the formation rocks become dense, high strength and difficult to be destroyed...

... pressure fip enhanced recovery loading rate fbp geologist asia government hydraulic fracturing wellbore integrity geological subdiscipline damage point fracturing-flooding experiment structural geology brazilian splitting test pressurization rate evolution process resistance specimen rock...

.... carbonate reservoir asia government upstream oil & gas reservoir geomechanics complex reservoir fracture surface reservoir characterization viscosity structural geology hydraulic fracturing geological subdiscipline geologist equation fracture stress distribution acid resistance china...

... weighting agent and an organic boron-zirconium crosslinker. Afterwards, a series of lab experiments were carried out to test 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...

... 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...

...., 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...

...-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...

... 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...

... deformation and even fracture occur, which seriously threatens the wellbore safety. In this paper, according to the critical moment, the cementing injection stage is divided into the different process. Based on the equations of friction resistance, a calculation method of vacuum section is proposed. Through...

... 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...

... is effectively sealed with cement to prevent cross-flow under differential pressure 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...

...ARMA 22 0539 Effect of chamfer geometry of PDC cutters on the impact resistance, wear resistance and rock cutting efficiency Jiusen Wei, Guiyu Hu, Xiaolei Shi, Fangyuan Shao, Wei Liu, Deli Gao MOE Key Laboratory of Petroleum Engineering, China University of Petroleum, Beijing, China Copyright 2022...

... shear strength resistance laboratory experiment ARMA 22 0075 Study on load-bearing characteristics of suction bucket foundation in deep-water based on finite element analysis and laboratory experiment Minghe Zhang, Jin Yang, Yuanming Wang, Shuzhan Li, Guojing Zhu, Yisu Zhou, Lei Li and Yuxiang Yang...

... 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...

... 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...

... the strength behavior of soft rocks. This paper focuses on the pile design improvement in soft rocks by relating SPT N-values to hammer blow counts at the end of driving (EOD), which are further related to pile resistances from CAPWAP, using eleven test piles from an electronic database (WyoPile). These two...