The change from steerable motor to rotary steerable system has been both technically and commercially successful in Lybia. Through these case histories the paper will demonstrate benefits resulting from the use of rotary steerable systems that have led to a step change in overall drilling performance in the Middle East. This paper describes the successful introduction and application of a rotar...

One of the important features of the fiber-optic distributed temperature log is its ability to acquire continuous, instantaneous and simultaneous temperature profile along the entire wellbore. Series of successive temperature profiles sampled every one minute or so enable to analyze transient temperature phenomena, which may pertain to important reservoir properties. For example, when change of...

optimization of drilling fluid parameters such as mud weight, salt concentration, and temperature is essential to alleviate instability problems during drilling through shale sections. the selection of suitable mud parameters can benefit from analyses that consider significant instability processes involved in shale-drilling–fluid interactions. this paper describes the development of analytical...

A new potential application of nanotechnology for mineral scale prevention in the oil and gas industry is presented. In current squeeze treatments, in which scale inhibitors are squeezed into wells to adsorb or precipitate onto rock surfaces for later release, a large proportion of the injected inhibitor does not adsorb and is therefore returned very quickly from the reservoir upon well re-star...

In this paper, the mechanical behaviors of different lithological rocks coal measure strata from Shanxi Formation in eastern margin Ordos Basin, China, were investigated through uniaxial compression tests, and deformation characteristics failure modes investigated. On basis, energy evolution lithology was also discussed. The results show that there are obvious differences properties strata, res...

Most of the Iranian oil and gas wells in the Persian Gulf region are producing through their natural productivity and, in the near future, the use of stimulation methods will be undoubtedly necessary. Hydraulic fracturing as a popular technique can be a stimulation candidate. Due to the absence of adequate research in this field, numerical simulation can be an appropriate method to investigate ...

Abstract The drilling-related geomechanics requires a better understanding of the encountered formation properties such as poroelastic parameters. This paper shows set laboratory results dynamic Young’s modulus, Poisson’s ratio, and Biot’s coefficient for dry water-saturated Istebna sandstone samples under series confining pressure conditions at two different temperatures. predicted from Wyllie...