productivity of an oil well is an important parameter in any oil field development. low production rate of the wells, impose more production wells drilling which directly jeopardizes the economical feasibility of the project. oil production rate in some of the wells is very low due to low permeability of the reservoir rock. several practice like hydraulic fracturing and acid fracturing is very ...

This is a summary of state of the art horizontal well technology and a review of the economic benefits of horizontal wells. The paper describes various reservoir applications of horizontal wells from primary recovery to EOR applications. The paper includes field examples of different applications. . Although horizontal wells have been drilled as early as 1927, the major thrust of drilling horiz...

OBJECTIVE To describe the mechanical rationale and clinical application of prototype right-angle reduction forceps. METHODS A pair of prototype right-angle reduction forceps was designed and manufactured specifically to improve the consistency and ease of fracture reduction. It was used to reduce mandible fractures of the mandible body, parasymphysis, and symphysis in 4 patients. The fracture...

BACKGROUND Graft fixation is critical to the restoration of the medial patella of femoral ligament function and long-term success. Numerous fixations at the patella have been described, while the complications including patellar fractures, violation of the posterior patella and delay of tendon-to-bone healing remain significant challenges. Here, we describe a safe and firm fixation at the patel...

Drilling-induced delamination is among the major concerns of applying the fiber-reinforced composite materials in various industries. Core drill ossesses the advantage for reducing the delamination by distributing the drilling thrust force toward the drill periphery. The thrust force of core rill varying with the conditions in drilling carbon fiber reinforced plastic (CFRP) is experimentally in...

Abstract Radial drilling-fracturing, the combination of radial drilling and hydraulic fracturing, can guide fractures toward target area effectively enhance recovery low permeable reservoir. In this paper, based on stress superposition principle, we establish an analytical model to predict fracture initiation pressure (FIP) shale failure mode for drilling-fracturing applied in formations. contr...

The Flowdrill technology, also known as thermal drilling or thermoforming drilling is a chip less process of shaping rims of holes through burring and it is an alternative to conventional technology of hole rims burring, realized using presses or welded nuts to obtain threaded joints [1, 2, 3]. It is applied everywhere, where it is necessary to obtain threaded joints of high strength without ap...

Sandstones that overlie or that are interbedded with evaporitic or other ductile strata commonly contain numerous localized domains of fractures, each covering an area of a few square miles. Fractures within the Entrada Sandstone at the Salt Valley Anticline are associated with salt mobility within the underlying Paradox Formation. The fracture relationships observed at Salt Valley (along with ...

Previously, we successfully applied a new method composed of drilling, bone marrow transplantation (BMT), external fixation and low-intensity pulsed ultrasound (LIPUS) for the clinical treatment of Kienböck's disease. The purpose of this study was to investigate whether bone regeneration can be induced by LIPUS and/or multiple drilling and/or BMT within a severely necrotic small-bone rabbit mod...

The purpose of this study is to investigate the effect principal stress direction on efficiency hydraulic fracturing treatment. There are two different drilling scenarios: 1. Four horizontal wells drilled in four orthogonal directions regardless in-situ condition (“Actual”). 2. Three equivalent “Actual” case by considering (“Proposed”). modeling was carried out based well logging data and compl...