... Abstract Hydraulic fracturing of horizontal wells is an effective development mode for low-permeability reservoirs, while new drilling can enhance reservoir recovery. The drilling, fracturing, and production processes all induce changes in reservoir stress, affecting the infill wells’ fracture...

... Abstract The CN oilfield is the main block of the X oilfield to increase reserves and production. However, the wells in this area are ultra-deep, and many sets of complex and difficult-to-drill formations are encountered in top-down drilling, which brings significant challenges to the drilling...

.... Usually, several different well trajectories of planned horizontal well will be designed in high drilling risky offshore field, and the pore pressure prediction tasks will take double or even triple time when using the traditional manual method. In these cases, the digital machine learning model...

... Table 3 Dynamic soil resistance parameters Drive the conductor into seabed. Once reaching 200 blows/0.25m, rig down the hammer and rig up drilling tools. Commence drilling into the conductor and drill past the shoe to at least 1 joint distance from the target setting...

... The under-reaming while drilling (UWD) approach was proposed, combining two under-reamers in tandem in a single BHA. This would allow logging while drilling to be conducted, while opening the hole at the same time. The second under-reamer would be placed close to the bit to open the remaining rat...

... trajectory design additional pump cycle drilling service offshore technology conference drilling operation survey data rig time dynamic condition upstream oil & gas definitive dynamic survey stationary time well planning electromagnetic resistivity drilling efficiency drilling...

... The drilling of the exploration wells in Xihu depression in East China Sea becomes very challenging as the drilling campaign shifts towards the deeper part of the west slope. The drilling in the west slope of the Xihu depression mainly targets the small faulted structures separated by sub...

... In recent years, a lot of people have made intensive study in deepwater drilling. Xu Yuqiang et al. set out from the basic law of gas influx migration in deep-water drilling, and they established the calculation model of gas-liquid two-phase flow in deep-water drilling wellbore [1...

... development optimization and planning critical element full field development offshore technology conference reservoir upstream oil & gas quick data analysis economics drilling asset and portfolio management synergy operation upstream field development project team work Introduction...

... thermal conductivity drilling batarseh proceedings offshore technology conference heat capacity laser drilling Introduction High power lasers (HPLs) make it possible to deliver, control, and target [high power] electromagnetic energy with unparalleled precision and versatility...

... Abstract Shallow Hazard was detected and prevents this exploration wells to be drilled vertically above the prospects. Thus, a directional well was planned 60m away from the intended surface location. The challenge was to use the same spudding method as the normal vertical well used...

... Abstract The combination of seismic exploration technology and drilling engineering forms the seismic measurement while drilling (SWD) technology, which can provide conventional borehole seismic measurements in real time while a well is being drilled. Just as conventional while-drilling...

... as it plays the main role in determining the operability of common distance-to-boundary tools. Combination of distance to boundary detection capability and Ultra-High Resolution Imaging while drilling allowed to place wellbore precisely at certain distance from the dolomitic fluid barrier, avoid any...

... reservoirs of oil, gas and coal. However, drilling through, analyzing and producing from hydrate formations is very expensive and highly challenging. Petrophysics - Integrated Logging While Drilling (LWD) tools provided triple combo measurements along with advanced measurements such as sigma...

... and meaningful interpretation of gas ratio analyses are discussed in reservoir sections of two exploratory wells (A & B of L. Cretaceous and L. Eocene) from KG Basin. Formation Gas data obtained during drilling are commonly analyzed as well-known ratios of ‘Dryness’, ‘Wetness’, ‘Balance’, ‘Character...

... the normally-pressured and highly fractured sandstones and volcanic rocks at the target depth. During the drilling of offset wells, multiple tight spots were experienced in the overburden. An inflow was detected in the volcanic rocks, and consequently the mud weight was increased in the deeper section...

.... The riser was securely connected to the wellhead with an external tieback connector, and it remains in place for the life of the well. For this project, the Operator deployed a specially designed TTR that could be used for both drilling and production for the first time in the Eastern Hemisphere. Unlike...

... Abstract Poor drilling performance can lead to increased costs when enhanced drilling performance and extended reach are the main goals for oil operators. Service companies and operators can use the latest technology and several pre-well planning processes and methods to enhance drilling...

... Abstract Narrow margin procedures incorporating MPD techniques were developed to tackle the challenges of drilling a deepwater well DW-X, offshore Malaysia. The subsurface prognosis had a ‘most likely’ case with a narrow pore pressure – fracture gradient (PPFG) window of between 0.5ppg and 1.0...

... Abstract The operator has faced an uphill challenge to extend the economic life of an existing producing field. The optimal selected solution was to unlock reserves in an adjacent field by drilling an extended reach (ERD) well (Well 1) from an existing platform across a major geohazard fault...