Dropping of oil price has significant influence in Oil & Gas industry in term of cost saving. A lot of efforts and initiatives were made in order to sustain with the current situation and to facilitate the Oil and Gas industry to lead the market. Existing of alternative energy is another challenge which threats the market. ILT initiative was introduced in the Drilling Function to Drill Wells in more efficiency and high performance considering the priority for safety and integrity. The main objective of ILT is to identify the area's of invisible lost time, track it and to Eliminate As Low As Possible (ALAP) and to Drill Well in Shortest Time compare it with Best Of Best Wells (BOB) During the period when the oil price was high, a lot of expansion in terms of rigs and manpower were there, where there are no focus in the performance of the wells which lead to big inflation in well duration resulted by Non Production Time and Invisible Lost Time. Invisible Lost Time is the hidden operation time which is lost due to many factors such as shortage of the key players, lack of experience, reluctant of people and shortage of proper equipment & tools. All these factors are affecting the main drive mechanism in the well which is, the ROP, Tripping Speed and Connection Time. A clear road map for the project was set for three phases. Pilot Phase, where focus was on the mentioned areas and identify the gaps and lesson learns. 2nd Phase, where the gaps can be filled and the lesson learns can be applied to get more results. The Final Phase were can be implemented to all the rigs after Healthy Check were implemented in Phase I & Phase II. This Paper will describe clearly the Objective of the ILT Project, The Key Elements of ILT; the Challenges were faced to achieve the Target, Case Study and Recommendation.

The future of hydrocarbon production has shifted toward the significant production potential of unconventional reservoirs. As the recovery of oil and gas becomes more complex, drilling through unconventional reservoirs pushes engineering boundaries to new limits to meet world demand in a safe and environmentally acceptable manner.ADCO decided to drill Well XY-123 in ЉXYЉ field in Abu Dhabi. ADCO leveraged extensive experience gained from numerous unconventional reservoir projects throughout the world in addition to the experience obtained from drilling over 1,000 wells in XY field.The main objective of the well was to acquire as much data as possible to create a database of knowledge for accurate study of the hydrocarbon potential in these reservoirs. Various formation evaluation data (density, neutron, resistivity, gamma ray, and sonic) were acquired from both loggingwhile-drilling (LWD) and logging using TLC. In addition, formation pressure sampling stations were also extracted from the reservoir. Conventional cores were successfully cut, with a 100% core recovery rate. Full data acquisition across the reservoir was obtained by the ADCO for the first time.Drilling such wells requires using the latest innovations in drilling engineering principles. These wells are more interrelated and sensitive to small changes than conventional wells. An integrated approach for both planning and execution is crucial because of the potential for risks, including high H 2 S percentages and drilling across high-pressure high-temperature (HP/HT) reservoirs, and all uncertainties must be properly assessed using solid engineering planning from many disciplines. This paper describes solutions to numerous challenges in terms of both planning and execution of a high-profile well, in addition to the experience gained. With the shared experience from the lessons learned drilling the well and the offset wells worldwide, this paper proposes a way forward view of the future of drilling unconventional reservoir wells in Abu Dhabi. Well ObjectiveThe well in question here was to be drilled in XY field, located in the onshore area of Abu Dhabi Emirates, about 150 Km to south west of Abu Dhabi city. This field is the largest mature asset in and the largest

Abu Dhabi Company for Onshore Oil Operations (ADCO), one of the major Oil and Gas producers in the United Arab Emirates embarked in a new challenge to drill and exploration well in a new field that had only one offset well drilled in the 1980's. ADCO planned to have a step change in how to manage risk, engineering and operations in order to enhance drilling performance and reduce non-productive time while maintaining the highest HSE standards. A detail risk management plan and engineering process was developed and the main drilling services were bundle for the most critical well sections 12.25Љ and 8.5Љ in order to guarantee seamless operations.The results of the implementation of this methology as well as the new initiative based on an active participation and cooperation between ADCO and the Drilling Service Company in all the phases of the well were outstanding and exceeded management expectations with regards to enhancement in drilling performance by optimizing ROP; reduction on NPT by reducing wellbore stability problems; ensuring high quality data acquisition; minimizing well cost.The excellent results achieved in this exploration well included safely drilling and in an efficient manner, considering that very limited historical data was available, the power of drilling services integration proven to be the foundation of success. Other important achievements were the use of the latest logging technology to extract the formation fluid from tight formations in an optimum time; without any doubt drilling the 8.5Љ section was the most challenging due to the expected concentration of H2S (~27%) with an increase of 2.3 times the ROP compared to offset wells; this was exceeding ADCO's expectations.The aim of this document is to describe how the risk management plan was integrated into the drilling program from the planning phase to the operation phase in combination with the technical expertise and drilling technologies fit to propose provided by the Drilling Service Company the knowledge and experience of the operator lead to develop specific solutions for the main risk and challenges of drilling this exploration well. The paper also describes how the use of the bundle service model which used to integrate all drilling services which became a key factor during the critical stages of the execution phase.

Drilling a successful well means reaching the target on time and on budget, getting a clear insight on the well operations data can provide a clear view of any risk that would impact the well delivery. With the analysis of the drilling activities data drilling teams can build the corrective actions and define the productivity best practices to apply for their future activities. When highlighting "data analysis" we refer to the process by which large amount of raw data is reviewed in order to determine conclusions based on that data. With the number of wells ADNOC Onshore drill every year it gives a clear view of the amount of data that is being generated from each operated rig and the massive amount it is required to build an insight on this data. The teams in ADNOC ONSHORE utilized the latest tools and technologies to build Drilling Cube, using big data techniques the massive amount of drilling data across different data sources were aggregated to a unified data model where drilling data is segmented to provide the required data insight, some of the measures being visualized includes Invisible Loss Time, Non Productive Time, Rate Of Penetration Analysis, Well Cost Analysis, Well Activities Breakdown Analysis With the above mentioned and the fact that wells are becoming more challenging to drill, ADNOC ONSHORE decided to build a data analytical dashboard "Drilling Cube" by which drilling teams can get a full insight on the drilling operations and drilling management are able to proactively take the necessary actions on time. By adding Drilling Cube as part of the tools drilling engineers utilizes to manage their day to day activities, a number of benefits are gained, the following are just some of the benefits of the data insight drilling engineers are getting: Allows for the identification of important drilling operations trends Helps drilling engineers identify performance problems that require some sort of action Drilling operations data is visualized in a modern charting capabilities, which leads to faster and better decisions Full awareness regarding the drilling activities Drilling Cube is currently providing a data insight from data that is being aggregated from different systems, the roadmap for the platform is to move towards a more advanced stage to apply techniques where it delivers predictive analytics and forecasts based on real time data and machine learning approaches, this will maximize the drilling teams insight over every day well operations and will help minimizing the risks surrounding the drilling operations.

In the onshore drilling operation the main objective is always finding ways to optimize cost and improve the efficiency of drilling operations. Among the various available option, one possibility was to drill 17.5" deviated section in one run through the interbedded formation, which cause high vibrations and risk of twist-off. This section previously was drilled with minimum 2-3 bit runs for a heavy casing design. This would definitely reduce the well duration and cost. The plan involved to drill 17.5" deviated section using rotary steerable system using hybrid bit technology. Recent advances in drilling bit design has proved to be very effective in drilling surface hole sections but are limited to drill vertical holes and require multiple runs to complete a section. Special design and cutting structure is required when it comes to drill deviated hole. One supplier has combined the traditional design and come up with hybrid bit structure to achieve this goal of drilling surface deviated hole in one run. This special hybrid bit, drilled successfully 17.5" deviated section in one run with enhanced ROP by 40% compared to previous wells. This saved additional trips to change bit and avoided any stuck pipe and twist off. This kind of strategy has helped to maximize average ROP of 64 ft/hr for the entire section. The main element in optimizing the performance of is the systematic approach towards the bit selection, hydraulics and mud parameters. Outcome of this optimization resulted in case history data which shows that this kind of hybrid bit technology can be used to drill deviated wellbore with better penetration rates, lesser washouts and longer on-bottom time. This technical paper describes the results of first well drilled by a service provider using hybrid bit technology with rotary steerable system in one run. This has resulted in increasing the rate of penetration for the 17.5" deviated top hole section. Applying this kind of hybrid bit technology has not only enhanced the ROP but also helped to save rig days and cost.