Proppant Oil And Gas

Henan Zhengnai New Materials Co., Ltd. is a professional petroleum fracturing proppant manufacturer in Henan Province, with the factory based at No. 90 Weisan Road, Wen County Industrial Cluster Area, Jiaozuo City, covering an area of more than 65,000 square meters, and a sales service company set up in Zhengzhou City. Its registered capital is RMB50 million and it has more than 200 employees. Henan Zhengnai adheres to the strategy of "promoting enterprises through science and technology" and has currently obtained 6 invention patents and 19 utility model patents authorized by the Patent Office of the State Intellectual Property Office.

Quality Guaranteed
Zheng Nai Petroleum's fracturing proppant products fully comply with the standards of the American Stim-Lab, and the British Frac-tech laboratory etc. The product performance has reached the international leading level and passed American Petroleum Institute APIQ1 certification. And we has passed the national laboratory accreditation CNAS certification. Recognized as a first-level material supplier by PetroChina and Sinopec, the company's products have been widely used in various domestic oil and gas fields.

Professional Team
The company has advanced laboratory facilities and has established strong partnerships with well-known companies, creating an ideal environment for continuous innovation and research and development. This collaborative approach enables the company to always stay at the forefront of technological advancement and maintain a competitive advantage in the industry.

Leading Service
Our team is dedicated to providing a one-stop service that addresses all your needs and concerns. We go above and beyond to resolve any issues you may face. Don't hesitate to reach out to us for assistance.

Widely sold
Recognized as a first-level material supplier by PetroChina and Sinopec, the company's products have been widely used in various domestic oil and gas fields, especially PetroChina Southwest Oil and Gas Field, Changqing Oil Field, Xinjiang Oil Field, Jilin Oil Field, Sinopec North China Oil Field, Shengli Oil Field, Yanchang Oil, China-Australia Coalbed methane and other users. The products are exported to the United States, Kazakhstan, Ukraine, Brazil and other countries, and are recognized and praised by customers.

Proppant is "sand or similar particulate material suspended in water or other fluid and used in hydraulic fracturing (fracking) to keep fissures open. This process, known as propping, is crucial for maximizing the flow of hydrocarbons from oil and gas wells by preventing the closure of fractures created during the fracking operation. The choice of proppant material, such as sand, ceramics, or resin-coated particles, depends on factors like well depth, temperature, and the mechanical properties required to support the fractures effectively. Properly selected and placed proppants enhance well productivity by maintaining conductive pathways for oil and gas to reach the surface, thereby increasing the overall efficiency and economic viability of the extraction process."

Coated proppant
Coated proppants improve their strength, acid and alkali resistance, also known as resin coated proppants. Usually consisting of two parts, the interior is composed of aggregates with a certain strength, and the exterior is coated with resin as a coating. Resin coated proppants have the characteristics of low density and high compressive strength. The surface of coated proppants is smooth, with good water conductivity and easy portability and transmission. In addition to being used for fracturing proppants, resin coated proppants can also effectively prevent proppant backflow, surface peeling, and formation sand production during fracturing fluid backflow. Each particle of the resin coated proppant has a uniform and tough resin shell, and the particles are also bonded together due to certain polymerization, resulting in good high-temperature stability and acid corrosion resistance.

Ceramic proppant
Due to the insufficient strength of quartz sand proppant to meet the requirements of high closure pressure oil and gas wells, researchers have invented an artificial ceramic proppant. Ceramic proppants are often made from mineral materials such as bauxite as the main raw material, supplemented by various mineral additives and sintered in a pressureless atmosphere. According to the difference in volume density and apparent density after sintering, ceramic proppants can be divided into 3 types: low density, medium density, and high density. Compared with quartz sand proppant, ceramic proppant has high sphericity, smooth surface, good fluidity, high compressive strength, and low crushing rate.Practice has shown that using ceramic proppants for fracturing oil wells can increase production by 30-50% and also extend the service life of oil and gas wells.

Natural quartz
The main component of natural quartz sand is SiO2, with a small amount of Al2O3 Ingredients such as Fe2O3, K2O, Na2O, CaO, MgO, etc. The main mineral component of quartz sand is quartz, with a content usually above 80%, which can reach over 98.5% in high-quality quartz sand. Quartz sand is hard, wear-resistant, and chemically stable. It is only soluble in hydrofluoric acid and not in other acids. Quartz sand has abundant resources, low prices, low density (about 2.65g • cm-3), is easy to pump, and still has good diversion ability after crushing, which has a certain effect on increasing production of oil and gas wells with low closure pressure. It also has low cost, convenient operation, and a relatively smooth surface after being washed by river water. These features above make quartz sand widely used as a hydraulic fracturing proppant. The diameter of quartz sand particles used as petroleum proppants is generally between 0.1mm and 2mm, also known as fracturing proppants or frac sand.

Resin coated proppants
Since fracking sand is easily friable and creates fines when it is over-stressed, resin coated sand was developed to enhance the conductivity of sand. Resin-coated sands (RCS's) have been a mainstay of stimulation treatments for more than 40 years. The longevity of RCS's is primarily due to its ability to form a pack within fractures thus preventing proppants from flowing back into the wellbore during fracking and production. It's also stronger than sand and often the choice when compressive strength is needed to prevent crushing in areas of extreme pressure at depth. The main disadvantage of the resin coating is that since the coating material is made of polymers, they tend to have low softening temperatures or low degradation temperatures compared to inorganic materials.

Sand Proppants
Sands have remained, for decades, the most used proppant agent for hydraulic fracturing, mainly due to their low cost and easiness to handle. Fracking sands are extracted from silica sand deposits or riverbeds, then crushed, washed, dried and (but not always) sized. These are mechanical processes and no special (expensive) chemical action is needed. Two types of sand proppants are chiefly in use since the beginning of the practice: white quartz sand (light colored because the few impurities), and brandy brown quartz sand (first experimented in 1958) with low percentage of silica and high impurity content, which makes it more prone to crushing at lower stress.

Proppant Size Optimization for Enhanced Production
The results of a parameter study which included the proppant size, fracturing fluid viscosity, volume of treatment, pumping rate, proppant concentration and injection sequence in the fracturing treatment to predict the production. They found that smaller proppants enable slower decline of the production rate in the long run, while larger proppants maximize the initial production rate and a combination of different proppant sizes optimizes the production. It combines reservoir transient production forecasting for an arbitrary shape, rectangular, bounded reservoir with a damaged hydraulic fracture. The effects of closure stress embedment, spalling, filter cake deposition and erosion, bulk gel damage, multiphase flow, and non-Darcy flow have also been taken into account to a certain extent.

Fracture Design Cost-Benefit Analysis
A longer and more conductive hydraulic fracture will achieve more production than a smaller, less conductive fracture. However, fracture treatment design is a tradeoff between increased cost of adding length and conductivity, and the economic benefits of the resulted increase in production. Most of the approaches used for cost-benefit based optimization of fracture design vary parameters such as fluid and proppant volumes, concentrations, types and flow rates. Proppant cost is a significant portion of a well treatment cost. For a small sand proppant treatment design, the proppant may account for 10–20% of the total cost of the treatment; whereas, in a large treatment using synthetic manufactured proppant, the proppant cost can be in excess of 50% of the total cost.

Economic Metrics for Unconventional Reservoirs
The three common economic metrics of NPV, Internal Rate of Return (IRR) and Payout should be considered. In unconventional reservoirs, the three metrics typically suggest similar capital allocation decisions since 30%–40% of the estimated ultimate recovery from unconventional wells is recovered in the first two years of operation.