Nine rock types including Sandstone, Limestone, Siltstone, Dolomite and Marl collected from six different rock formations of the Salt Range area of Pakistan were tested to evaluate the correlations between the uniaxial compressive strength and the corresponding values of the point load index. Two hundred rock cores were drilled and used for the uniaxial compressive strength and point load index...

Received: August 22, 2016 Revised: February 07, 2017 Accepted: March 10, 2017 Abstract: Background: Tight sandstone reservoirs play an important role in the oil industry. The permeability of tight sandstone reservoir generally has stronger stress sensitivity than that of conventional reservoir because of the latter’s poor physical properties. However, the production analysis of tight sandstone ...

Abstract The overbalance pressure drilling technique is well common and practiced during the operations in petroleum field. This parameter very critical affects drilled formation characteristics, therefore, main objective of current study to evaluate impact that applied operation on rock elastic strength characteristics by employing integrated lab experimental work. Berea Buff sandstone type wa...

Many habitat specialist species are originally composed of small, discontinuous populations because their habitats are naturally fragmented or patchy. They may have suffered the long-term effects of natural patchiness. Mediterranean heathlands, a representative habitat in the Strait of Gibraltar region, are associated with nutrient-poor, acidic sandstone soils. Sandstone soil patches in the Afr...

Sandstone formations are ubiquitous in both aquifers and petroleum reservoirs, of which clay is a major constituent. The release of clay particles from pore surfaces as a result of reduced injection fluid salinity can greatly modify the recovery of hydrocarbons from subsurface formations by shifting the wettability properties of the rock. In this paper we demonstrate a microfluidic approach whe...

In the Junggar basin, northwest China, many high gamma-ray (GR) sandstone reservoirs are found and routinely interpreted as mudstone non-reservoirs, with negative implications for the exploration and exploitation of oil and gas. Then, the high GR sandstone reservoirs' recognition principles, genesis, and log evaluation techniques are systematically studied. Studies show that the sandstone reser...

With the current developments in imaging/computational techniques and resources, computational rock physics has been emerging as a new field of study. Properties of rocks are examined by carrying out extensive numerical simulations on rocks that have been digitized using high-resolution X-ray CT scans. The ultimate goal of computational rock physics is to supplement the traditional laboratory m...

Abstract The present work investigates potential of nanocomposite (NCP) for enhancing the production in heavy oil formation. NCP was extracted from bauxite ore and spectral characterization revealed that a crystalline material whose matrix consists 64.5 wt.% alumina oxide (Al 2 O 3 ), 15.7 iron (Fe 19.8 silica (SiO ). fluid, obtained by dispersing into targeted formation brine, showed good disp...

We present an explicit stabilised finite element method for solving Navier-Stokes-Brinkman equations. The proposed algorithm has several advantages. First, the lower equal-order space velocity and pressure is ideal presenting pixel images. Stabilised allows continuity of both tangential normal velocities at interface between regions different micro-permeability or free/porous domain. Second, fu...

Quantifying interactions and dependencies among geometric, hydraulic mechanical properties of reservoir sandstones is particular importance for the exploration utilisation geological subsurface can be assessed by synthetic comprising microstructural complexity natural rocks. In present study, three highly resolved samples Fontainebleau, Berea Bentheim are generated means a process-based approac...