Content of PetroWiki is intended for personal use only and to supplement, not replace, engineering judgment. SPE disclaims any and all liability for your use of such content. A well into which fluids such as produced water and some liquid wastes can be injected. It is in a non hydrocarbon, non-fresh water sand and is not connected to the hydrocarbon bearing formation.
An alternative term for it is occupational safety and health (OSH). Some organizations include security and social economics under the HSE umbrella. Titling it HSSES becomes cumbersome, so the abbreviation HSE is typically used include safety and security. Safety, health, environmental, security, and social economics are separate disciplines, each with its own technology; however, these disciplines are often combined in the same functional groups within exploration and production (E&P) organizations. The health function typically deals with the well-being of the employees as they live and work in the E&P environment.
San Antonio-based Petro Waste Environmental (PWE) announced the opening of its newest state-of-the-art nonhazardous oil and gas waste landfill facility in Howard County, Texas. Milestone Environmental Services has announced the ground breaking for its new oilfield waste-disposal facility south of Midland, Texas.
Elevated concentrations of strontium, an element associated with oil and gas waste waters, have accumulated in the shells of freshwater mussels downstream from wastewater disposal sites, according to researchers from Penn State and Union College. With concern growing that the underlying geology in the Permian Basin is reaching capacity for disposal wells, the Trump administration is examining whether to adjust decades-old federal clean-water regulations to allow drillers to discharge waste water directly into rivers and streams.
Stanford geoscientists have found a way to detect thousands of tiny tremors around hydraulic fracturing operations that could serve as predictors of eventual larger earthquakes. One of Oklahoma’s top government officials announced recently that it could be many more months before the full scope of the state’s regulatory response plan for induced seismicity is proven effective. Earthquake in Cushing, OK -- home to the largest oil storage facility in the world -- leads to further regulatory action on disposal wells in the area. Research and development firm Battelle is working on a new induced-seismicity study that aims to help wastewater disposal well operators in Ohio stay on the good side of state regulators. Industry regulators in Oklahoma have rolled out broad new restrictions on more than 600 disposal wells as part of the largest action of its kind taken in response to earthquakes.
Stanford geoscientists have found a way to detect thousands of tiny tremors around hydraulic fracturing operations that could serve as predictors of eventual larger earthquakes. It is known that a well injecting a lot of water near a big fault can lead to earthquakes. The problem is, more often than not those faults are not known until after a tremor. Top US seismic experts say they are keeping a watchful eye on ground shaking in the state as new concerns are raised in neighboring Texas. One of Oklahoma’s top government officials announced recently that it could be many more months before the full scope of the state’s regulatory response plan for induced seismicity is proven effective.
Earthquake in Cushing, OK -- home to the largest oil storage facility in the world -- leads to further regulatory action on disposal wells in the area. Research and development firm Battelle is working on a new induced-seismicity study that aims to help wastewater disposal well operators in Ohio stay on the good side of state regulators. Industry regulators in Oklahoma have rolled out broad new restrictions on more than 600 disposal wells as part of the largest action of its kind taken in response to earthquakes. A surge in earthquakes tightly clustered in southern Kansas that followed the large increase in produced water injections prompted the state to cut the daily limits on disposal wells in that area to see if that will help solve the problem.
Kholy, S. M. (Advantek Waste Management Services) | Sameh, O. (Advantek Waste Management Services) | Mounir, N. (Advantek Waste Management Services) | Shams, M. (Advantek Waste Management Services) | Mohamed, I. M. (Advantek Waste Management Services) | Abou-Sayed, A. (Advantek Waste Management Services) | Abou-Sayed, O. (Advantek Waste Management Services)
Oilfields produce huge amount of waste on daily basis such as drilling mud, tank bottoms, completion fluids, well treatment chemicals, dirty water and produced saltwater. These waste types represent a real challenge to the surrounding environment especially when the oilfield is located within a sensitive environment as in the Western Desert where there are natural reserves and fresh water aquifers. Waste slurry injection has proven to be an economic, environmentally friendly technique to achieve zero waste discharge on the surface over the past years. This technique involves creating a hydraulic fracture in a deep, subsurface, non-hydrocarbon bearing formation which acts as a storage domain to the injected slurrified waste. The objective of this study is to evaluate the feasibility of waste slurry injection in an oil prospect located in the Western Desert. The evaluation includes assessing the subsurface geology, recognizing the possible candidate injection formation(s), and designing the optimum injection parameters.
Both geological and petrophysical data have been used to create the geomechanical earth model for an oil prospect located at Farafra oasis in the Western Desert. This model defines the mechanical properties, pore pressure, and in-situ stresses of the different subsurface formations. Afterwards, a fully 3D fracture simulator has been used to simulate the fracture growth within the candidate injection zone at different injection scenarios. Additionally, the fracture simulator has assessed the containment of the created fracture within the candidate injection formation(s) due to the presence of stress barriers above and below the formation. Finally, the formation disposal capacity has been calculated for each of the injection scenarios using a stress increment model.
The geomechanical earth model shows that there is a good candidate injection zone which is upper/lower bounded by stress barriers. More importantly, it is located deeper than the local fresh water aquifer and thus no contamination is expected to the fresh ground water. In addition, the possible candidate is not a hydrocarbon bearing formation.
A 3D fracture simulator has been used to determine the optimum injection parameters such as: the injection flow rate, the volumetric solids concentration, the slurry rheology and the injection batch duration. These optimum parameters are defined to minimize the stress increment rate over the well life, which ensure the highest disposal capacity and to contain the fracture within the candidate injection formation.
Guidelines to conduct waste slurry injection technique in a new oil prospect that is located within a sensitive environment as in the Western desert are presented in this study. Also, the study highlights that this technique is economic for disposal of the different oilfield waste types in an environmentally friendly fashion.
The operator set challenging rate of penetration (ROP) targets on a six-well campaign in the Norwegian Sea, with total depths between 6000 and 7000 m (19,500 to 22,750 ft) and initial targets of 70 m/h (17.5-in. interval) and 120 m/h (12.25-in. interval). To support these ROPs, the cuttings and slops management system should provide higher conveyance and storage capacities than typically observed during drilling operations. When specified ROPs were achieved, targeted rates increased on subsequent wells.
Collaboration among the operator, rig crews, and service provider was important to operating the high-volume cuttings management system. Adequate transfer and storage capabilities were essential on both the rig and vessels delivering waste to shore for disposal. The final configuration included the following components: 2 × 16-in. Conveyors, each feeding 2 pneumatic cuttings collection/transfer units 11 High-capacity, nonplugging storage tanks 1 Flexible hard-pipe system for simultaneous transfer to/from storage tanks 2 Cuttings transfer hoses for simultaneous discharge to vessel 1 Modular slop treatment unit Cuttings transport tanks on the vessel
2 × 16-in. Conveyors, each feeding 2 pneumatic cuttings collection/transfer units
11 High-capacity, nonplugging storage tanks
1 Flexible hard-pipe system for simultaneous transfer to/from storage tanks
2 Cuttings transfer hoses for simultaneous discharge to vessel
1 Modular slop treatment unit
Cuttings transport tanks on the vessel
On the final well, ROP targets increased to 130 (17.5-in.) and 230 m/h (12.25-in.). Operating at 80 to 90% capacity, the system managed up to 60 mT of cuttings per hour. A total of 8959 m3 slops was treated, resulting in the overboard discharge of 8769 m3 treated water (oil-in-water concentration was 11.9 ppm), and waste volume sent to shore was reduced by 98%. The drilling program was completed 250 days faster than planned, and wells were delivered for production one year earlier than planned. The reduced time allowed the operator to drill a seventh well within the timeframe allotted for the original six-well program. Achievements of the seventh well continue to exceed expectations.
Close collaboration between the operator and personnel in the service company’s integrated rig team made this possible. Equipment operators continually optimized the process and delivered a high level of adaptability while ROP targets increased. This project set new standards for drilling performance on the Norwegian continental shelf.