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Oilfield Microbiology
The bacterial analysis is one of the most overlooked aspects of water sterility in the oilfield industry causing reservoir souring and Microbiologically Influenced Corrosion (MIC). Using measuring techniques such as inoculation and Most Probable Number (MPN), ATP test, and even simple quick checks, we are able to provide customers with the solutions they need.
Reservoir Souring
Reservoir souring is the unplanned appearance and continuing increase in hydrogen sulphide (H2S) concentration in produced fluids associated with injection water breakthrough and occurring as a result of the down-hole activity by a specialized group of micro-organisms, the sulphate-reducing bacteria (SRB)
Onsite Monitoring
We can support customers' requirements for onsite monitoring in the areas of hydrocarbon liquid and gas as well as water analysis onsite. From baseline studies to mapping H2S, mercury, corrosion, souring, water injection audit, and microbiology, we provide accurate and quick results in critical operations, whether it may be well testing or chemical optimization, that require decisions to be made real-time offshore.
Multiphase Pressurized Sampling Skids
When facing difficulties in collecting samples offshore, the multiphase pressurized sampling skid can be utilized to obtain liquid and gas samples in a safe manner. The portable separator sampling system is fully operated by use of panel mounted valves and instruments. The system has atmospheric sample outlets for water and oil, while gas can be sampled in a constant pressure cylinder. The separator vessel has a panel mounted direct reading level gauge, and a PRV to ensure no unwanted pressure build up in the vessel. Filters are installed on the inlet line, and a PRV will divert the flow to drain in case of clogging of the filter. A large filter house allows for longer operation before necessary cleaning or replacement of filter.
Portable Water Injection Module (PWIM)
The membrane-based PWIM is designed to be modular and compact, which is highly beneficial in overcoming challenges on brownfield platforms or any platforms with weight and space limitations. Working closely with our technology partner, this approach to water injection serves to effectively treat seawater, reduce dissolved oxygen to required concentrations and ensure the water injected into the reservoir is according to specification. The PWIM system can also be designed to include a sulphate removal unit (SRU) to remove sulphate ions from seawater for reservoir souring mitigation. SRUs are also widely used in sulphate scale mitigation programs as well.
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Multiphase Pressurized Sampling Skids
When hydrocarbon and water sample collection offshore is a challenge, the multiphase pressurized sampling skid can be utilized to collect liquid and gas samples with ease in compliance with HSE. The portable separator sampling system is fully operated by the use of panel-mounted valves and instruments. The system consists of atmospheric sample outlets for water and oil, while gas can be sampled in a constant pressure cylinder. The separator vessel has a panel-mounted direct reading level gauge and a PRV to prevent over-pressurization of the cylinder. Filters are installed on the inlet line, and a PRV will divert the flow to drainage in case of clogging at the filter. A large filter house allows for longer operation before necessary cleaning or replacement of filter.
Oilfield Microbiology
Bacterial analysis is one of the most neglected aspects of water sterility in the oilfield industry, often resulting in reservoir souring, microbiologically influenced corrosion, and issues with potable water quality and food safety. Using measuring techniques such as inoculation, most probable number (MPN), ATP, ADP and AMP tests, more advanced qPCR analyses for quicker turnaround time in SRB enumeration and quick checks, we cater to different sets of challenges and requirements faced by our customers.
Chemical
Optimization
We provide on-site and laboratory chemical optimization of production and integrity chemicals. Corrosion inhibitors, biocides by use of microbiological analyses and bioreactors, oxygen scavengers, and bottle tests for scale inhibitors are used to determine the best-in-class chemicals that are optimized to provide greater value for operators. Laboratory tests are conducted to determine the efficacy of corrosion inhibitors, biocides, and scale inhibitors for the water chemistry and conditions for the specific field. This is then optimized onsite by measuring chemical residual and monitoring the corrosion, microbial count, and scale products in the production system. The chemical injection is adjusted according to the data acquired through these tests.
Microbiologically Influenced Corrosion (MIC)
Microbiologically influenced corrosion (MIC) of surface injection and production facilities and pipework is primarily associated with the intensified activity of SRB and GHB, giving rise to localised corrosion. We provide planktonic and sessile bacterial analysis and water chemistry analyses to study the presence of biofilms and the consortia of microorganisms present. Through the use of advanced qPCR methods for MIC assays (SRB, IRB, APGHB, etc), microbial counts can be obtained quickly to adjust biocide injection to protect the pipework. Bio-studs are placed in sidestreams to measure the forming of biofilms that reflect biofilms formed on the surface of pipelines.
Integrated Sand Sampling
and Monitoring
Formation sand and fines get produced with fluids during production and this causes erosion of pipelines and equipment while plugging tubulars. We are able to mobilize produced sand sampling skids offshore to collect physical sand samples, monitor the sand intrusively and non-intrusively, and analyze the size distribution of the sand. This integrated approach towards sand monitoring delivers holistic solutions for the operator and customer that will be useful in their mitigation strategy.
Produced Water
Monitoring
In produced water treatment systems, the removal of oil particles from the produced water using hydrocyclones is very crucial. Our oil droplet and particle size and concentration monitoring analyzer can be used to determine its efficacy to ensure that the oil-in-water concentrations are well below HSE requirements before going overboard. The equipment is designed to operate continuously on-line at high pressure, elevated temperatures, and corrosive and inhospitable environments.
Manpower
Consultancy
We provide manpower and consultancy for water injection, production chemistry, well testing, flow assurance, and asset integrity. With our experienced and highly knowledgeable team, we are able to provide the right personnel who will fit the job.
Onsite Portable
Laboratory
To meet the need of multiple analyses to be done on-site, we provide Zone 1 and Zone 2 portable laboratories containing the necessary equipment that can be mobilized offshore for round-the-clock analysis.
Reservoir Souring
Reservoir souring is the result of the activity of sulphate-reducing prokaryotes (SRP) – a group composed of sulphate-reducing bacteria (SRB) and sulphate-reducing archaea (SRA) that causes the unplanned appearance and continuing increase of hydrogen sulphide (H2S) concentration in produced fluids. This is often the result of the various possible nutrient sources that spur SRP growth, complex transport processes for H2S and the influence of operations performance, such as deoxygenation performance and biociding exercise. We provide on-site chemistry and microbiology analyses for accurate data that are input into souring prediction models for desktop studies and simulation, which are done with our technology partners.
Surface Sampling and Analysis for Well Testing
dP Fluiteq offers surface sampling and analysis of hydrocarbons and produced water during well testing and clean-up that provide insights for future field development by analysing baseline hydrocarbon parameters, water chemistry, microbiology, and contaminants such as mercury and H2S. For fields where mercury is an issue, we mobilize the mercury analyzer for on-site analysis when flowing the well to the surface for the first time. This provides the customer with valuable data that will help in determining future plans for Mercury Removal Units (MRU). H2S analysis and reservoir souring studies can also be done to predict and mitigate future souring occurrences which may require operators to design Sulphate Removal Units (SRUs) with their water injection modules (WIMs).
Offshore Potable Water and Food Safety Monitoring
Potable water monitoring is crucial as microbial activity in potable water can pose health and safety risks to oil and gas personnel. Microbial and water chemistry evaluation and audit can go together to ensure water quality is acceptable for consumption.
We also provide analytical services for food safety in offshore galleys by detecting, monitoring, and enumerating E.coli, Coliform, and Enterobacteriaceae (EB) family. This provides a peace of mind to all personnel that the food and water are safe for consumption.
