Results 1 to 10 of about 14,166 (227)
Research progress of 3D printing PDC and PDC bit
Jin'gangshi yu moliao moju gongcheng, 2023 PDC bit has become the preferred type of drill bits in the field of oil and gas exploration. The ever-increasing performance requirements of PDC bits, especially the drilling efficiency, have brought great challenges to the drill bits. The improvement of
Jingjing WU +5 more
doaj +2 more sources
The effects of gravity on rock fractures caused by PDC bits. [PDF]
Sci RepTo understand the crack propagation and chip formation mechanism caused by a PDC bit for various gravity values, a numerical study using particle flow code in 2 dimensions (PFC 2D) is performed. The numerical results indicate that the cracks, caused by stress concentrations, are responsible for chip formation. In addition, the fracture area and cutting
Zhang Q +5 more
europepmc +3 more sources
Research status on rock-breaking mechanism and performance testing methods of PDC bit cutters
Jin'gangshi yu moliao moju gongcheng, 2023 Polycrystalline diamond compact (PDC) drill bits are one of the main rock breaking tools in drilling engineering. The performance indexes, such as rock breaking efficiency, wear resistance, thermal stability and impact resistance of PDC bit cutters, have
Yancao LI
doaj +1 more source
Investigation of the Cross-Cutting Polycrystalline Diamond Compact Bit Drilling Efficiency
Shock and Vibration, 2021 The parallel track scraping principle of conventional PDC bits largely limits the cutting efficiency and working life in deep formations. Cross-cutting polycrystalline diamond compact (PDC) bit may be an efficient drilling tool that increases the rock ...
Chun-Liang Zhang +5 more
doaj +1 more source
Geofluids, 2022 Polycrystalline diamond compact (PDC) bits experience a serious wear problem in drilling tight gravel layers. To achieve efficient drilling and prolong the bit service life, a simplified model of a PDC bit with double cutting teeth was established by ...
Li-qiang Wang +5 more
doaj +1 more source
Development and application of hobbing-cone hybrid PDC bit
Geomechanics and Geophysics for Geo-Energy and Geo-Resources, 2023 In order to solve the problems of low ROP and short service life of the bit drilling in deep and hard formation, a new technology of hobbing-cone hybrid PDC bit which has combined the advantages of conventional PDC bit and the hobbing-cone is proposed in
Lian Chen +7 more
doaj +1 more source
Approximate MIMO Iterative Processing with Adjustable Complexity Requirements [PDF]
, 2011 Targeting always the best achievable bit error rate (BER) performance in iterative receivers operating over multiple-input multiple-output (MIMO) channels may result in significant waste of resources, especially when the achievable BER is orders of ...
Gerd Ascheid +2 more
core +1 more source
Semantic media decision taking using N3Logic [PDF]
, 2011 In this paper, we introduce a media decision taking engine (MDTE), enabling the automatic selection and/or rating of multimedia content versions, based on the available context information.
Van de Walle, Rik +3 more
core +2 more sources
Bionic coupling polycrystalline diamond composite bit
Petroleum Exploration and Development, 2014 Bionic coupling polycrystalline diamond compact (PDC) was designed according to the biological coupling theory, its performance was evaluated by wear resistance experiment, and then the bionic coupling PDC bit was made and used in field drilling test ...
Ke GAO +5 more
doaj +1 more source
A Backend Framework for the Efficient Management of Power System Measurements [PDF]
, 2016 Increased adoption and deployment of phasor measurement units (PMU) has provided valuable fine-grained data over the grid. Analysis over these data can provide insight into the health of the grid, thereby improving control over operations. Realizing this
Bass, Robert +5 more
core +3 more sources