Integrated Contract

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The Miahuapan block has the following pipelines: Origen Destino Roads within the Miahuapan block Diám (pg) Líneas de Descarga Long (km) Tubería Año de Construcció n Estado TEJADA 1 BS TEJADA 4 0.05 LDD S/I Operativa TEJADA 2 BS TEJADA 4 0.3 LDD S/I Operativa TEJADA 3 BS TEJADA 4 0.3 LDD S/I Operativa TEJADA-4 BS TEJADA 4 0.8 LDD S/I Operativa TEJADA-6 BS TEJADA 4 0.8 LDD S/I Operativa TEJADA-11 BS TEJADA 4 0.7 LDD S/I Operativa TEJADA-12 BS TEJADA 4 0.7 LDD S/I Operativa TEJADA-22 BS TEJADA 4 0.3 LDD S/I Operativa TEJADA-24 BS TEJADA 4 0.3 LDD S/I Operativa TEJADA-23 BS TEJADA 4 0.5 LDD S/I Operativa TEJADA-31 BS TEJADA 4 0.9 LDD S/I Operativa TEJADA-43 BS TEJADA 4 0.5 LDD S/I Operativa TEJADA-52 BS TEJADA 4 1.5 LDD S/I Operativa TEJADA-63 BS TEJADA 4 1.3 LDD S/I Operativa Road map (roads and unpaved roads) villages, well pads and oil facilities 20
Drilling History Drill parameters Deep: 2,200 meters developed Deviations: 0° (verticals) and directional in Tejada Densidad de lodos First stage: 1.20 gr/cm³, water base mud Second stage: 1.30 gr/cm³, bentonite mud Third stage: 1.45 gr/cm³; inverse emulsion mud Objective: Tamabra <strong>Integrated</strong> <strong>Contract</strong> Difficulties during drilling Surface stage Hydration of clays, circulation losses, drag during lowering of casings, borehole instability and shallow Gas and/or Water flows. Intermediate stage. Reactive shale interbeddings, pipes getting stuck and possible fluid loss, high penetration speeds, possible increases in equivalent circulating density (DEC, in Spanish) due to concentration of cuttings in the annulus and increases in the number of jammings and circulation losses. Production stage Packing, resistance and drag, presence of formation gas, circulation losses, jammings due to differential pressure, bit balling, accumulation of slag in the curved section. Drill practices The objective of this section is to review common drilling practices used in the development of this reservoir; they are listed as a reference and not as a proposed application of methodology and technology by AIATG. Most of the fixes for the casing pipe (TR) in this area correspond to a design with a 9 5/8” conductor casing, which is intended for the installation of surface tie-ins and is cemented down to around 200 and 400 m. The production TR is 6 5/8” it is cemented at 2,200 and 2,300m. 21
Page 1 and 2: Integrated Contract 1
Page 3 and 4: Introduction The Miahuapan block is
Page 5 and 6: Basin Description Integrated Contra
Page 7 and 8: to the reefal denudation, and chang
Page 9 and 10: Main Features Integrated Contract T
Page 11 and 12: Basal formations. Cores and cutting
Page 13 and 14: The following figure shows the same
Page 15 and 16: History of Exploration and Developm
Page 17 and 18: Integrated Contract Currently, Petr
Page 19: Infrastructure and Hydrocarbons Han
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Integrated Contract

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