The casing damage of oil and water wells has seriously affected the normal production oilfield. This paper analyzes high occurrence in Saertu layer, finds that there is a contradiction between injection formation prevention control damage. Although wellhead pressure can be guaranteed to lower than its fracture during production, injected energy at includes potential kinetic energy. Because rela...

Anthropogenic land-cover change is driving biodiversity loss worldwide. At the epicenter of this crisis lies Southeast Asia, where biodiversity-rich forests are being converted to oil-palm monocultures. As demand for palm oil increases, there is an urgent need to find strategies that maintain biodiversity in plantations. Previous studies found that retaining forest patches within plantations be...

This paper aims to investigate the localized corrosion mechanism of Q125 casing steel in residual acid solution with Mannich base type inhibitors during oil reservoir acidizing process. The behavior fresh (20% HCl) and (pH 1.0 pH 3.0 without 3-(4-chlorophenylimino)-1-(piperidine-1-ylmethyl) indolin-2-one (Mannich type, Mb) inhibitor was studied by electrochemical test, weight loss, surface anal...

A technique is described for collecting reef interstitial water using manually-driven well points. This method does not require the use of hydraulic drills, and eliminates the problems associated with the casing of boreholes. The technique allows collection of samples from discrete depths within reef frameworks, and produces samples unaffected by atmospheric or surface seawater contamination. D...

Steam turbines consist essentially of a casing to which stationary blades are fixed on the inside and a rotor carrying moving blades on the periphery. The rotor is fitted inside the casing with the rows of moving blades penetrating between the rows of fixed blades. Thus steam flowing through the turbine passes alternately through fixed and moving blades with the fixed blades directing the steam...

Carbon capture and storage is considered as an amelioration technique to address the increasing level of carbon dioxide in atmosphere. Depleted oil gas reservoirs are potential candidates for long sequestration captured dioxide. The huge number drilled wells these hydrocarbon around world, however, pose a threat integrity geological CO2 projects. These direct connections Earth’s surface even wh...

Some of the challenges being faced by the petroleum development industry worldwide are low-cost and more efficient well completion, water-shutoff, other types of zonal isolation, etc. Successfully addressing these issues, solid expandable tubulars (SETs) are finding increasing use for enhanced oil recovery from difficult or damaged wells. All SET applications revolve around cold expansion of th...

Piedmont tectonic belts are rich of oil and gas resources, however the intense tectonic stress and broken formation may cause great drilling problems in piedmont structures such as borehole collapse, lost circulation and gas cutting. Through analysis of in situ stress properties, bedding structure and mechanical characteristics, wellbore instability mechanism was expounded from rock mechanics, ...

This paper presents a numerical model of an integrated 3D casing-cement-formation system, to evaluate the mechanical tensile and shear failure cement at casing-cement interface as pressure temperature conditions formation borehole vary during production. The which includes pressure, unlike others proposed, was developed by stages under finite element discretization compared analytical models. R...