A US official has confirmed that Venezuela is sending 500,000 barrels per day to Gulf Coast refineries, representing 40% of Venezuela's total 1.25 million barrel-per-day output. The figure reveals a bilateral oil relationship far deeper than the sanctions-era rhetoric would suggest. The structural reality is stark. US refineries — particularly those along the Gulf Coast — were engineered decades ago to process Venezuela's heavy, sour crude. That engineering lock-in means the relationship isn't a policy choice so much as an infrastructure inheritance. Switching feedstock grades requires expensive retooling that no refiner volunteers for when the current arrangement works. For Venezuela, shipping half its output to a single buyer is a concentration risk dressed up as a trade relationship. The Maduro government gains hard currency and a functional export channel, but at the cost of strategic autonomy. Washington can throttle the flow with a phone call. For the US, the arrangement secures a heavy crude supply that few other Western Hemisphere producers can match at volume — but it also means Gulf Coast refining capacity is partly hostage to Caracas's political stability. The extraction dynamics cut both ways but unevenly. US refiners capture the margin spread between cheap Venezuelan heavy crude and finished product prices. Venezuela captures export revenue but at prices discounted by sanctions risk, reputational overhead, and the absence of competitive bidding. The Venezuelan public sees little of this revenue under the current governance structure. This is a textbook case of bilateral dependency masquerading as leverage. The US frames the relationship as a concession it can revoke. Venezuela frames it as proof of indispensability. Both framings obscure the real dynamic: infrastructure lock-in has created a channel that neither side can easily exit without significant cost. The 1.25 million barrel-per-day production figure itself tells a story. Venezuela sits on the world's largest proven reserves but produces a fraction of its potential — down from over 3 million bpd before the Chávez-era decline and subsequent sanctions. The current output level reflects years of underinvestment, brain drain, and infrastructure decay. The US is buying from a producer operating at roughly 40% of its historical capacity. If this arrangement persists for two decades, the most likely outcome is deeper lock-in: Gulf Coast refineries further optimized for Venezuelan crude, Venezuela further dependent on a single buyer, and both sides increasingly unable to diversify without writing large checks. The relationship calcifies from convenience into necessity.