... Abstract With the development of deepwater oil and gas fields in china, the demand of high strength marine drilling riser augments gradually. All the riser depends on importing, so the technology of high strength riser must develop in order to sinicization. After investigation on national...

... sthrenth and environmental friendly. Conventional cement slurries and low density cement slurries are usually taking a long time to set and can't allow significant compressive strength development at such low temperature. In addition, conventional cement additives are often environmentally unacceptable...

... Abstract Conventional mud weight designs are typically developed by using a 2D analytical solution. These methods, however, are unreliable in shallow, unconsolidated sands, which have very low cohesive strength and pressure-sensitive material properties, such as Young's modulus and Poisson's...

... reservoir pore pressure reservoir characterization borehole water content hydration mudstone equation drilling fluid stability artificial intelligence instability gas drilling stress distribution collapse density wellbore stability drilling strength wellbore design coefficient...

...: a deepwater West Africa shale and a more-competent Oklahoma shale. After a 3-hr exposure time, the changes in rock strength with different WPS levels were measured directly and results were qualitatively consistent for the two shales. In this paper, the effect of changes in the WPS of IEF on the safe...

... to the time-histories curve of the creep pressure and the steel grade, wall thickness, strength of the casing. The results obtained by numerical simulations were used to select the rational casing used in the salt layer. The conclusion is that under the force of the heterogenetic Earth stress, the strength...

... which have good thermal stability and optimized particle size distribution. annular pressure drilling upstream oil & gas dnwr ph value fracture spe 131605 bridge material drilling fluid management & disposal society of petroleum engineers compressive strength formation fracture...

... a consistent mechanical earth model, an appropriate mud weight window is suggested based on formation strength and induced stress along the wellbore. Choosing an optimum mud weight would prevent fracturing the reservoir and losing mud into formation. Hence, drilling time and production rate of Asmari formation...

... in the presence of aggressive formation and injection fluids (such as magnesia or sulfate containing brines and CO 2 ) are given. API cement hydration mainly produces Calcium-Silicate-Hydrate (C-S-H) phases, which are responsible for the strength, and portlandite "Ca(OH) 2 " which is basically a weak point within...

... strength. Drilling-mud-filtrate invasion also tends to be deeper. Deep-penetration perforating charges are required to perforate past the damaged zone. Experience indicates that underbalance perforation provides better productivity compared to overbalance perforation. Although conventional underbalance...

... treatment of the sandpack indicates more than 95% decrease in permeability compared to the original sandpack permeability. The gel also caused more than 50% increase in the penetration resistance of the sand pack i.e. enhanced the strength characteristics of the sandpack. drilling fluids and materials...

... in this work. The effects of borehole configuration (e.g. inclination and azimuth), rock properties (e.g. strength, Young's modulus, membrane efficiency and permeability), temperature, and drilling fluid properties (e.g. mud density and chemical concentrations) on wellbore stability in shale formations have...

... drilling fluids and materials annular pressure drilling drilling fluid management & disposal bit selection anvil spe 104178 dynamic modeling gang han bruno society strength cuttings mechanism Introduction Invented by the Chinese more than 4000 years ago 1 , percussion drilling has...

... downhole intervention portland cement slurry operation solidification single plug job production enhancement petroleum engineer strength cement slurry dilatant slurry filtrate completion installation and operations society Introduction Cement channeling problems have adversely affected...

... strength. The high-temperature blocking agent developed is of characteristics of better stability, easy preparation, low cost, controllable setting time and convenient in-situ operation. The field experiments were further conducted by applying the blocking agent to the selected 4 wells with observable...

... tenacity cement slurry system is introduced in this article. drilling fluid selection and formulation drilling fluid formulation cement formulation cement chemistry drilling fluid chemistry drilling fluid property casing and cementing stabilizer strength fluid loss stability particle...

... in the surface oil /gas separator (taken half volume of the separator). It is difficult to make decision yes or no to sand control. The authors collected the information of the oilfield (logging data, cores, DST etc.), done rock strength test in various conditions (unconfined strength, tri-axial strength...

... equation, which when expressed in flow rate takes the form of Abstract This paper presents a case study where the creative use of wireline-derived sand strength in the offshore production test process improved operational efficiency. Sand strength was computed using wireline data only and subsequent...

..., this paper also presents a typical application of the data in a Plug and Abandonment design (i.e. the Finite Element Engineering design of a thermally pre-stressed ‘rubber’ abandonment plug). sealant shrinkage upstream oil & gas coefficient spe 64762 operation strength plug cement chemistry...

... cnpc midstream oil & gas residual stress base metal strength pipeline toughness ssaw pipe uoe pipe huang zhiqian society of petroleum engineers china metals & mining SPE 50883 Society of Petroleum Engineers Combined Using SSAW and LSAW Pipes for Oil & Gas Pipelines -A Reliable...