The drilling operation is highly dynamic in nature. In the current drilling scenario, where the operational margins are narrowing down with increased complexity, transient simulation of wellbore condition and Thermal and Hydraulic Analysis are imperative and strategically important for planning and efficient drilling performance as well as optimum wellbore design.
Well control simulation is a very useful tool for supporting well plan evaluation and drilling operation (Simulation While Drilling). We offer transient multiphase flow simulations of different blowout scenarios to identify and evaluate the well kick risk and determine the best ways to prevent well control incidents. The transient Simulation of Well kick involved the fully dynamic behaviour of the wellbore and near wellbore interaction with the reservoir. The outcome will assist operators to better plan a safe operation with optimised drilling parameters.
The transient simulation is an essential method to prepare the contingency plan to control the well blowout risk as Dynamic Kill is a transient technique combining the static head of kill mud with frictional pressure losses in order to suppress the reservoir pressure and kill the blowout.
Dynamic Kill Analysis Features and Benefits
Thermal-Hydraulics tools generate, model, optimise and develop accurate temperature and pressure profiles, downhole fluid behaviour throughout the trajectory of the wellbore such that Bottom Hole Pressure (BHP) remains closer to the pore pressure. These tools also maintain narrow windows of drilling pressures between pore pressures and fracture gradient pressures. This increases borehole stability, lessons formation damage and avoids drilling fluid losses or gain.
Drill Insight’s Thermal-Hydraulics modelling tools include the following factors and parameters, which affect wellbore instability and hydraulics.
While drilling (under flowing conditions), when Equivalent Circulation Density (ECD) of drilling fluid causes dynamic BHP of wellbore to be less than pore pressure, results in kicks or when BHP crosses fracture gradient pressure, results in losses. Kicks and losses are the main source of NPT and associated drilling risks.
During non-flowing conditions (not drilling), movement of the drill string when pulling out of the hole causes the bottom hole pressure to decrease. This is referred to as swab pressure, results in kick (formation fluid influx). Whereas rise in the bottom hole pressure due to running in the hole is called as surge pressure, results in drilling fluid losses, formation breakdown and wellbore instability.
Drill Insight’s Thermal-Hydraulics modelling tools plan and optimise pulling Out of Hole (POOH) and Running-In-Hole (RIH) operation to reduce kicks or losses.
Well Design and Optimisation Services deliver optimum Casing and Tubing Design (Sections lengths, Casing/liner Sizes) based on safety factors, stress and load analysis derived from Well Performance profiles (hydraulics and thermal profile). Dynamic simulation of well operation provides the well production profile for a variety of operating conditions throughout the well life cycle. These profiles provide the vital insight in well design to ensure efficient production from well over its life span. We offer well Design simulation services for both;
We derive efficient drilling parameters, based on Thermal-Hydraulics modelling tools, within narrow drilling window between pore pressure and fracture gradient pressure for compliance purposes. Our services identify, evaluate all possible risks, (wellbore instability, formation damage due to kicks or losses, differential sticking in conventional wells, casing rupture or equipment failure in HPHT wells) leads to NPT and compromise well integrity and provide a platform to prepare mitigation plan to assure better wellbore integrity with no formation damage and less NPT.
We use the output from our thermal-hydraulics modelling tools to write well and drilling programs, that include wellbore thermal-hydraulics analysis, well geometries, casing programs, mud considerations, well control concerns, initial bit selections, offset well information, pore pressure estimations, economics, and special procedures, etc. by aiming for characteristics, such as safety, minimum cost and usability.
Our advanced THM modelling solution creates a dynamic, real-time picture of the entire wellbore by interfacing real-time data with advance drilling models. These models continuously assess drilling performance, borehole conditions, and associated risks based on real-time symptom detection. The delivered improved understanding of drilling operation enable operator to detect incipient drilling problems and take preventive action. The result is more consistent and more efficient drilling.
A unique real-time drilling optimization solution is based on DrillScene Software. Sekal AS has developed and validated the product in collaboration with Statoil, Saudi Aramco, and IRIS. Drill Insight is the APAC partner of Sekal AS for representing the product and related services.
The solution creates a dynamic, real-time picture of the entire wellbore and key drilling variables/parameters at the time of drilling by interfacing real-time data (LWD/MWD, Mudlogging, Wireline and other rig floor analysis), along with G&G inputs of a prospect as pre-feed information, with advanced drilling models. These tightly coupled real-time dynamic models – hydraulic, mechanical and thermodynamic – simulate wellbore condition and characterise improvement or deterioration during drilling.
The THM tool simplifies real-time data analysis by using trends and deviations between modelled and actual data to monitor well bore condition and empower drilling team to anticipate & avoid issues such as poor hole cleaning, stuck pipe, lost circulation, gain, formation damage and borehole instability, underground blow out, Torque & Drag. That results in predicting issues, which leads to non-productive time (NPT) and invisible lost time (ILT) helps to keep your drilling plans on schedule and ensures effective cost control for every well by improving efficiency & safety and reducing risk & hazard.
The THM modelling tool also offer real-time modelling of key drilling variables such as hook load, surface torque, cuttings transport, pit volumes, standpipe pressure and dynamic ECD. It also calculates fluid temperature and density evolution, mechanical and hydraulic friction in the wellbore, all of which highlight changing wellbore conditions and potential problems.
It improves drilling operations by:
The Real-time Dynamic Modeling of drilling operation fills the data gap behind the bit, enabling operators to assess crucial factors such as fluid volumes, fluid velocity, cuttings proportions, pressure, temperature, ECD and friction along the complete drillstring from bit to surface. This helps to identify the optimum conditions for each section being drilled.
Drill Insight host the Real-time dynamic modeling services at client’s RTOC as well as offer the same with RTOC hosting services to make reach of the unique capabilities for both onshore and offshore drilling.
More details : http://www.sekal.com/2016/drillscene/
We provide bespoke engineering solutions to meet field development plans, lifecycle well integrity and production requirements. Our Well Completion & Commissioning Services provide the efficient well operation insight with best of well Integrity assurance.
Dynamic Multiphase well operation simulation services to better plan well commissioning, well restart, well testing by simulating the multiphase wellbore condition. Our Services optimise the critical well operations like;
Our Well Integrity Assurance services simulate Wellbore condition keeping safety and asset integrity as the objective. We provide what-if analysis of critical Operation Scenarios with key equipment failure mode as well as root cause analysis of pass failure mode. This Analysis provides assurance level for futuristic unwanted possibility and provides better provision to have safe operation maintaining asset integrity.
Prototyping the wellbore condition and well performance by dynamic modelling reveal the realistic picture of operation and performance which enable the operator to optimise well deliverable.
The transient simulation of the well is essential to better understand multiphase behaviour of well operation, analysis the possible Flow assurance issue, Optimise the well operation and to ensure the well integrity throughout the life of operation
The Advanced Well simulation services address both hydraulics and thermal analysis of a range of well flow assurance concerns in great details in all phases of well operation covering the well’s life. The detailed analysis of flow problems results in an effective mitigation strategy to ensure optimum performance of the well over its life span.
Transient simulation of Well performance is essential to optimise the well operation. Our Well Performance Optimisation services covers;
We develop a range of subsea development scenarios covering different subsea design options based on Flow assurance analysis. Our services will provide the first insight for concept screening, analysing the feasibility of potential concepts and in-house pre-feed design of Field development of selected concepts.
We develop a comprehensive Subsea decommissioning plan covering both decommissioning of Subsea structures and Well Plugging & Abandonment.
There is no one-size-fits-all approach to decommissioning and the options are influenced by a wide variety of factors including – in no particular order;
We evaluate all above factors qualitative as well as quantitatively, wherever it requires. The culmination of a qualitative and a quantitative assessment provided the basis of the final decommissioning option.
We perform detail risk analysis of asset decommissioning with the aim of achieving ALARP (As Low As Reasonably Practicable) Level. We are well resourced to cover all aspects of the technical review of comparative assessment report in accordance with international, national and state regulations and guidelines. The assessment methodology will be to compare durations and costs with benchmark data, compare the assumptions against the local legislation, identify any technical challenges, recommend alternative approaches and opportunities if applicable.
Subsea Hardware Decommissioning: Our consultants have years of experience preparing and implementing Decommissioning risk assessments, documentation, and operations, from Christmas Trees (XT), valves, manifolds, pipelines, umbilical, and topside set-ups.
Well Plugging and Abandonment (P&A): We perform compliance verification to investigate gaps between company well integrity systems and regulatory policies. Drill Insight’s TMFS software simulate sustained annular pressures in transient multiphase environment of well prior to well P& A. Output parameters from simulation help our clients in keeping P&A costs low. Work scopes include;