In order to solve the corrosion problem of production string in process acidizing for purpose production, a new water-based annular protective fluid suitable HTHP acid gas, including H2S-CO2 wells, was developed. Firstly, an appropriate deoxidizer, bactericide, and inhibitor shall be selected according gas. addition, synergism between additives is evaluated. Then, by designing additive ratio, o...

Abstract This piece of study attempts to accurately anticipate the apparent viscosity viscoelastic surfactant (VES) based self-diverting acids as a function VES concentration, temperature, shear rate, and pH value. The focus not only is on generating computer-aided models but also developing straightforward reliable explicit mathematical expression. Towards this end, Gene Expression Programming...

This paper presents a comparative study between different oil production enhancement scenarios in the Saadi tight reservoir located Halfaya Iraqi field. The exhibits poor petrophysical characteristics, including medium pore size, low permeability (reaching zero some areas), and high porosity of up to 25%. Previous stimulation techniques such as acid fracturing matrix acidizing have yielded this...

The oil production rate decreases rapidly after a short period of high yield from acidizing or fracturing in low-permeability reservoirs. In this paper, nanospheres are applied before the step, which possess ability to absorb water and expand layer, reducing flow capacity bottom finally enhancing recovery. plugging performance is investigated by nanosphere displacement experiments cores sand-pa...

The quest to replace toxic chemicals in the nearest future is revolutionizing corrosion inhibitor research world by turning its attention plant biomaterials. Herein, we report inhibiting potential of butanolic extract date palm leaves (BUT) on API 5L X60 carbon steel 15 wt.% HCl solution. mass loss, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), linear (LPR), ...

Drilling and completion fluids may cause significant formation damage in oil gas reservoirs, directly affecting productivity. For many years, operators have applied different stimulation practices such as acidizing, oxidizers, chelating agents, enzyme treatment to remove associated with drilling filter cake. An enzyme-based biological was combined other chemicals or additives a selective well c...