In thin-layered reservoirs, drilling engineers face tough challenges—planning their drilling programs to follow the most productive reservoir layers while avoiding nearby water, gas or high-pressure zones. The rewards for a successful drilling strategy are clear—increased oil production and reduced water cut. In an oil field in the Persian Gulf, for example, oil production was increased four- t...

Drilling mud is a dense, viscous fluid mixture used in oil and gas drilling operations to bring rock cuttings the earth's surface from boreholes as well lubricate cool drill bit. Water-based commonly due its relatively inexpensive easy dispose of. However, several components additives muds become increasingly cautious restricted. Starch was introduced safe biodegradable additive into water-base...

Abstract The increasing global demand for hydrocarbon has brought new challenges in the petroleum reservoir's drilling process. Non-biodegradable chemical additives are used fluid and it leads to endangering environment personnel safety. Thus, there is a great need biodegradable that can protect personal safety while done well. This study with help of microbial analysis investigates effects sit...

Research has shown that many Bentonite in Nigeria are unsuitable for oil well drilling in their natural states. Their modification and blends with some additives could increase the yield and boost their suitability. Many indigenous polymers have become very popular due to environmental friendliness and their ability to modify rheology of clay suspension. However, the common natural polymers are...

Polyphenols are widely used in drilling fluid, cement slurry and water treatment oil fields. The paper is based on the characteristics of abundant phenolic hydroxyl groups plant polyphenol compounds that can form stable complexes with iron ions, forming blueviolet to brown salts, color salts itself for light yellow, a method designed evaluate quality polyphenols, which provides simple reliable ...

to enhance solubility and the performance of a plant gum (from south peach tree of china, sp gum) as a drilling fluid additive, we explored the potential of modified sp (msp) gum by modifying it with epichlorohydrin. the modification conditions, such as the mass ratio of  the crosslinking agent, ph and temperature, were optimized and the results show that 56.40 g/100g mass ratio of the crosslin...

A variety of methods are examined in this study order to improve oil recovery from low-permeability heterogeneous reservoirs oil-saturated shale deposits. Calculations based on the fluid flow model revealed that water and gas injection was effective, horizontal directional wells, including those employing hydraulic fracturing evaluated study. Moreover, wells with vertical completions found be o...

Hydraulics play an important function in many oil field operations including drilling, completion, fracturing, acidizing, workover and production. The standard API methods for drilling fluid hydraulics assume either power law or Bingham plastic rheological model. These models and corresponding hydraulic calculations do provide a simple way for fair estimates of hydraulics for conventional verti...