Cenovus Energy has patented a method for producing hydrocarbons from subterranean reservoirs using a plurality of well pairs on a well pad. By inducing localized gradients and modifying pressure differentials, the method enhances hydrocarbon production. GlobalData’s report on Cenovus Energy gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Cenovus Energy, Wellbore drilling optimization was a key innovation area identified from patents. Cenovus Energy's grant share as of February 2024 was 54%. Grant share is based on the ratio of number of grants to total number of patents.

Enhanced hydrocarbon production from subterranean reservoir using well pairs

Source: United States Patent and Trademark Office (USPTO). Credit: Cenovus Energy Inc

A recently granted patent (Publication Number: US11927084B2) outlines a method for producing hydrocarbons from a subterranean reservoir using a unique approach. The method involves penetrating the reservoir with a plurality of well pairs, including steam-dominant and solvent-dominant pairs, and operating them under specific conditions to induce localized gradients. By identifying heat-depleted or solvent-lean well pairs, the method then adjusts conditions to enhance hydrocarbon production by modifying pressure differentials between the pairs. The array configuration can vary from three to twenty well pairs, with options for symmetrical layouts and different well-pair configurations like SAGD/SAP/SDP or SAP/SDP/SO.

Furthermore, the method allows for the delocalization of gradients across a percentage of the array and provides flexibility in adjusting bottom-hole pressure values between adjacent well pairs. The transition from the initial set of conditions to the modified conditions can be triggered by various factors like time, production levels, or economic considerations. The solvent-dominant injectant used in the process can include substances like propane, butane, or natural gas condensate. The method is designed to be effective in different types of subterranean reservoirs, including thin pay zones or heterogeneous pay zones, where temperature or solvent-concentration gradients need to be optimized for improved hydrocarbon production.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.